The inhabitants of Bruhl are forced to evacuate due to the impending Imperial invasion under the armed protection and assistance of Bruhl's armed town watch after the Imperial military launches an invasion into Gallian soil. Alicia, a town watch soldier, arrests Welkin Gunther alongside two other armed town watch militia personnel because he was behaving suspiciously by the riverside by himself; despite his pleas of innocence that he's not a spy as Alicia claims. Welkin manages to escape and Alicia chases after him, still convinced that he is a spy. During the chase, both of them are spotted by Imperial scouts. The two retreat to the safety of the almost abandoned Gunther estate in the Bruhl countryside, where they meet up with Welkin's Darcsen step-sister Isara. However, moments later Imperial troops and tanks arrive and surround the estate.

The Gunther siblings and Alicia manage to break out of the Imperial siege using the prototype tank Edelweiss, which was designed and built by Isara's biological father, a Darcsen engineer. They flee to Bruhl, with the Imperial forces in close pursuit. The town patrol decides to fight a delaying action to cover the evacuation until the Regular Army arrives; however, they are handicapped by inferior and poorly maintained equipment, with the exception of the Edelweiss. Alicia, Welkin and Isara attack the invading Imperial troops and tanks to give the remaining militiamen the necessary time to escape from the almost abandoned Bruhl as the Gallian Army arrives to reinforce it. However, even though they arrive in time to rescue the civlians, the Regular Army decides not to try and retake Bruhl. Due to the capture of Bruhl by the Imperial military, Alicia and her friend Susie Evans enlist in the Gallian Army's militia forces to fight off the Imperial invasion. Alicia is later surprised to find out that Welkin had also joined up as a militia officer.

During the meeting of the new members of the Militia, Welkin is assigned to be the commander of Squad 7 and Alicia is assigned to be his subordinate, much to her dismay. After the meeting they encounter Faldio Landzaat, an old university friend of Welkin who was appointed the commander of Squad 1. Welkin meets his Squad, however, his introduction speech does not impress his subordinates, who believe him to be naive and inexperienced. Welkin and his Squad set off for Vasel Bridge, held by the Imperials, which connects the main road to the capital city of Randgriz. When certain members of Squad 7 grumble about the presence of Isara in the Squad, Welkin makes a bet with the Squad that if he manages to reoccupy the bridge in two days with only Squad 7, they have to follow his orders. With the help of Edelweiss, they catch the Imperials by surprise and manage to capture the bridge. Although the members are satisfied with Welkin's abilities, Rosie adamantly refuses to acknowledge Isara's presence.

Faldio attempts to socialize with Alicia with mixed results. Despite Squad 7's success in capturing the Vasel Bridge from Imperial military forces, General Damon of the Gallian Regular Army remains disdainful of the Militia forces, and chooses to omit Squad 7 in the assault on an vital Imperial supply base in Kloden, leading to widespread resentment from the Militia. Alicia is troubled by Welkin's quiet acceptance of the omission, but Faldio seizes the chance to encourage her to have more faith in Welkin. Damon is subsequently defeated by General Gregor of the Imperial Army and Squad 7 is subsequently chosen to attack Kloden, with support from Faldio's Squad 1.

Welkin and the rest of Squad 7 team up with Faldio and his Squad 1 to take on the recently captured Kloden base under the command of General Gregor. The base looks heavily defended, until Rosie captures a porcavian pig because of a mistake by Alicia, and discovers an animal trail. Welkin then proposes using the Edelweiss and a squad of militia led by Rosie and Largo to distract the main Imperial force while Alicia and Squad 1 approach the base from the side using the animal trail, much to Alicia's dismay as she is not fond of Faldio. Jaegar arrives with some soldiers to assist the reluctant Gregor in escaping. Alicia is shot during the operation, but Faldio is able to help her to safety. However, she soon resumes the operation, saying that she has always healed fast, much to the amazement of Faldio. The Militia soon captures the base, but Welkin has to restrain Faldio from pursuing the retreating enemy. Alicia decides to keep the porcavian pig and names it Hans, after the operation was declared to be a success.

War correspondent Irene Ellet comes to interview Lieutenant Welkin Gunther for her radio show under Radio GBS. However, Alicia is worried that Welkin, being absent minded and unorthodox in the way he handles things, may end up saying things that might tarnish the reputation of the Militia; so she interferes with Welkin's interview, clashing with Irene on several occasions. After not being able to get useful information from Welkin's Squad 7 subordinates, Irene finally manages to corner Welkin in the male toilet, with an unsuspecting Alicia waiting outside; Welkin then agrees to the interview. Squad 7 celebrates with a barbecue courtesy of Irene, but a fight breaks out between Faldio's Squad 1 and Welkin's Squad 7, though after a while it all settles down and both parties enjoy the feast. Irene finally clinches the interview and figures out why Alicia was being so overbearing. To Alicia's relief, the interview turns out well, though she protests vehemently that Irene need not come again for another interview.

In an attempt to belittle the Militia's recent accomplishments compared to the Regular Army, General Damon assigns the Militia to the Barious Desert, over the protests of Captain Varrot. Welkin and Faldio debate on the authenticity of the Darcsen Calamity and whether it has taken place. The two Militia officers head out to visit the ruins alongside Alicia, Ramal and Isara when their jeep breaks down due to mechanical problems. While Welkin, Faldio and Alicia heads to the ruins on foot, Isara and Ramal stays behind to repair the jeep. In another part of the ruins, Selvaria and Maximilian decipher the Old Northern Script writings on the wall to read on the calamity while being able to gain access using Selvaria's blood. The two groups eventually confront each other when Welkin finds out the presence of the two Imperials.

Welkin, Faldio and Alicia confront two imperials: Selvaria and Maximilian in the Barious Desert. When Faldio accuses the Imperials of trespassing, Maximilian concedes the fact, but points out that the place belongs to the Valkyrur, namely Selvaria. When Maximilian attempts to leave, Alicia threatens to shoot, but Selvaria is able to deflect her shot, leaving the Gallians stunned at her feat. Meanwhile, Isara and Ramal sense a large disturbance and hurry over to the ruins, only to see a gigantic tank firing upon the ruins upon Maximilian's orders, causing the place to collapse and separating Welkin from Alicia and Faldio. Meanwhile, Imperial forces under Gregor's command seize Fouzen and execute the defeated General. However, Gregor pronounces himself as dissatisfied with the easy victory, having wanted the Edelweiss as the opponent instead of incompetent Gallian Regulars. Welkin manages to escape with the help of Isara and Ramal, though Faldio and Alicia are still trapped within the ruins. While waiting for help, Faldio tells Alicia of Welkin's past, highlighting the unusual ways he gets things done. When babysitter lizards appear in the ruins, Welkin realizes that there must be a path, and is eventually led to Alicia and Faldio. Alicia gratitude for being rescued is tempered when she realizes, after the rescue, that Welkin was also interested in the babysitter lizards; leading Faldio to remark that Welkin is an "amazing guy".

With ulterior motives in mind, Imperial Central Command dispatches three aides to serve the Generals. Karl Oswald, aide to Selvaria, finds his commander intimidating and cool towards him. Meanwhile, Prince Maximilian is summoned back to Central alone, much to Selvaria's consternation. Sensing power politics at play behind Maximilian's recall and the three aides' sudden appearance, Jaegar suggests that Selvaria should act according to her instincts. However, Selvaria's initial attempt to go after the Prince is thwarted by Karl's hurried persuasion. After being saved by Selvaria from an assassin sent by Central, Karl confesses that he was sent with ulterior motives, namely to prevent Selvaria from accompanying Maximilian to Central. He proceeds to redeem himself by driving Selvaria and Jaegar to catch up with the Prince, where he subsequently witnesses Selvaria in action against assassins sent against Maximilian, and also discovers the reason behind her nickname, the "Azure Witch". Maximilian survives the attack unharmed, much to his step-brother, the Crown Prince's consternation. Karl was glad to note that Selvaria was subsequently more accepting of him.

Alicia and Welkin seek shelter in an abandoned cabin, informed of an incoming snowstorm using Welkin's knowledge of the mountain environment. After a night had passed, a single Imperial soldier enters the cabin and threatens use a live frag grenade against them. Alicia, however, is able to temporarily convince the soldier to lower his weapon so she can treat his gunshot wounds. Meanwhile, everyone in Squad 7 begins to feel worried as Alicia and Welkin, as they have not returned from scouting a way out of enemy territory. At the cabin, the wounded soldier explains that he joined in the military to have a better life for his family, since he comes from a family of farmers. The soldier reveals that he grew disillusioned with the army and was shot by his comrades while attempting to desert. Moved by Alicia's compassion, he re-inserts the safety pin in his grenade, rendering it inert. He tells the two Gallians his name: "Mikhail Weber", before he dies from his wounds. Alicia and Welkin reunite with the other Squad 7 militia personnel after burying Mikhail's remains.

Welkin and Alicia are invited to attend a ceremony with Faldio, Ramal and Isara back at Gallia. Meanwhile, Selvaria and Jaeger infiltrate Gallia under the guise of a rich couple from overseas. During the banquet, Faldio and Welkin are awarded for their action in taking back Vasel and Kloden from Imperial forces by Princess Cordelia. Jaegar encounters Alicia outside the banquet hall, giving her a warning while speaking to her. Alicia informs Welkin and Faldio of the true nature of their supposed guests. After Cordelia returns to her quarters to rest, she was mysteriously abducted by an unknown man. When Alicia gets lost in the castle, she sees unknown men kidnapping Cordelia, however because she witnesses them, Alicia too gets kidnapped on Prime Minister Maurits von Borg's orders

After Faldio accuses Selvaria, Karl and Jaeger of staging the kidnapping, Welkin, Faldio and Ramal are forced to work together with the Imperial officers to rescue Alicia and Cordelia before they are moved into Atlantic Federation territory. Welkin and Isara, in the Edelweiss, team up with Faldio and Ramal in intercepting pro-Federation agents to rescue Alicia and Cordelia. When Alicia is taken hostage by one of the agents, Welkin brandishes a pistol and wounds the agent, shooting him in the shoulder. Irene, who is in hiding, realizes that the disappearance of Cordelia is the apparent work of Borg and Federation Ambassador Townsend. Cordelia, in a meeting with Faldio and Welkin, orders the non-publication of her abduction to Gallian media since she wants to keep the affair private matter to herself and to those involved in the rescue operation. Irene warns Alicia, Isara and Ramal of a deeper conspiracy aside from what had happened yesterday evening. /spoiler]

13 "The Terrifying Mobile Fortress"
"Senritsu no Idou Yousai" (戦慄の移動要塞) June 27, 2009


14 "Choice of Fouzen"
"Fauzen no Sentaku" (ファウゼンの選択) July 4, 2009

15 "The Songstress' Past"
"Utahime no Kako" (歌姫の過去) July 11, 2009

16 "Unspoken Thoughts"
"Katarenakatta Omoi" (語れなかった思い) July 18, 2009

17 "Gifts from The Spirits"
"Seireisetsu no Okurimono" (精霊節の贈り物) July 25, 2009


18 "August Rain"
"Hachigatsu no Ame" (八月の雨) August 1, 2009

Damon orders the deployment of Gallian militia forces to Fouzen out of his irritation for their growing popularity and their success in recent battles against Imperial forces in Gallian soil. While some of the militia forces attack Fouzen by launching a tank assault, Welkin and Faldio lead their units to the rear in civilian clothes in order to covertly make contact with a Darcsen anti-occupation guerrilla group led by Zaka. Once there, the militia and guerrillas make plans to begin their operation to destroy General Gregor's armored train known as the "Equus", while at the same time trying to attack the Fouzen Imperial military HQ and Darcsen concentration camps. After arriving in Fouzen, Rosie tells Zaka of her clear dislike to the Darcsen people because of their history. Despite this, Zaka tells Rosie that he understands her anger as he and that his fellow Darcsens had become used to anti-Darcsen discrimination a long time ago. Welkin, Faldio and Zaka proceed to make preparations to launch their respective groups as the first stage of beginning an anti-Imperial assault.

The Gallian militiamen, led by Welkin and Faldio, and the Darcsen guerrillas led by Zaka began to assault Imperial positions in Fouzen. Although there was some initial success in overwhelming Imperial forces and rescuing the Darcsen prisoners, Gregor and the Equus, as well as some surviving Imperial soldiers and tanks, are able to mobilize to rout the invasion attempt. When the Equus is lightly damaged by planted explosives at the railway tracks, Gregor issues an ultimatum for the Gallians to withdraw from Fouzen or face the death of innocent Darcsens at their hands. When Faldio issues the order to attack, the Equus fires its cannon at the Darcsens. Isara and Ramal, who are in a hijacked Imperial tank, attack the Equus and eventually destroy it. Even though the operation was a success, the militiamen and the guerrillas' morale is down due to the deaths of the Darcsens civilians, killed by anti-personnel munitions. Rosie is traumatized, remembering the deaths of her parents at the hands of heavily armed gunmen years ago as a child.

Varrot instructs all squad leaders to take a break following the Fouzen operation to lift their morale. When Rosie is told by the squad to represent them in a talent contest, she refuses to do so and leaves the barracks in anger. When she meets Isara, Rosie tells her that armed Darcsen guerrillas came to take shelter in the Stark residence during EWI to hide from Imperial soldiers when she was a child. Rosie's parents were killed by the guerrillas in the crossfire when they accused the father of leaking their location to Imperial forces. Despite what had happened, Rosie is traumatized by her past and still doesn't want to sing. Welkin decides to try persuading her himself after hearing what Isara had told him that she would avoid being present in the talent show to get Rosie to participate. Faldio later returns back to the barracks with Isara in tow; Rosie had performed even with Isara present as an order from Faldio. Her performance was able to cheer all the militia personnel up. Faldio tells Alicia after the concert that he likes her.

After their defeat at Fouzen, the Imperials realize that the tide of the war is turning, and if they do not regain their momentum, they will be pushed out of Gallia. However, Maximilian has a plan, but does not divulge the details to Jaeger. Meanwhile, back in Gallia, the Militia is put on alert due to suspicious Imperial movements. At camp, Largo notices the romantic tension between Welkin and Alicia. He takes Welkin to a makeshift bathouse and tells Welkin that he was in a similar situation. During the previous war, he was caught in a love triangle between Varrot and his best friend, which ended when the friend sacrificed himself in battle. Largo warns Welkin not to repeat his mistakes. Meanwhile, Isara goes to town for some shopping and Ramal decides to accompany her. Later that night, Alicia confronts Welkin and tells him about Faldio's confession. She asks Welkin what he really thinks of her, and what he thinks she should do, but Welkin refuses to involve himself, claiming that he doesn't want to hurt Faldio.

The Militia receives new orders that they are to attack the Imperial base at the Mulberry Coast. However, due to the surrounding terrain, the only possible direction of attack would be through the coastline, which is completely exposed to the base's formidable defenses. Worse, the attack is scheduled to take place at the same time as the Holy Spirit Festival, a holiday that all Gallians celebrate. Squad 7 makes the best of the situation, and still manages to celebrate as the squad members give gifts to each other. Meanwhile, Isara manages to complete smoke shells to give Squad 7 an edge. During the attack, the smoke obscures the defender's aim and allows Squad 7 to breach their lines. Emboldened by the Militia's success, the Regular Army finally joins the fight and forces the Imperials to retreat. However, Rosie is wounded early in the fight and stays behind with Isara. Rosie's attitude with Isara begins to soften as she begins to view her more as a friend instead a Darcsen. Unfortunately, Isara is shot by a sniper, much to Rosie's shock.

Due to Isara's death in the Mulberry operation, the Gallian military posthumously awarded her with the rank of Sergeant Major. Welkin informs the Squad, including Varrot, to quickly move on in order to further deal with the Imperial Army's incursion to Gallia despite the squad's low morale even with threats made by Ramal with accusations of being cold towards his foster sister. Rosie suffers from PTSD over her guilt in not being able to save Isara in time while recovering from her injuries. General Damon meets with Squad 7, wanting to get a hold of the smoke bombs that the Gallian Army can use to defeat further Imperial Army incursions. Damon, feeling humiliated when attacked by Rosie over defiling Isara's Darcsen scarf, demands to Welkin to give him the details on making the smoke bombs in three days or risk being punished. Alicia later discovers that the rest of Squad 7, angered at Damon's actions, plan to ambush him with a hidden hole on the ground to trap him. However, Faldio manages to convince them otherwise, saying that the best way to humiliate people like Damon is keep winning battles and save Gallia. He later enters Welkin's office and scolds him for working to hide his sadness and punches him for not doing anything to boost Squad 7's morale.

Welkin and Alicia begin burying themselves in their work in order to avoid the issue of their relationship. The rest of Squad 7 are aware of this, but are unable to do anything about it. Varrot then informs Welkin that Squad 7 is tasked with liberating Bruhl, in an effort to raise Welkin's and Squad 7's morale. Zaka then arrives at the base, and announces that he will be the replacement driver for the Edelweiss. Meanwhile, as Welkin packs Isara's belongings, he begins to have flashbacks of his sister. After doing some research, and piecing together clues he had witnessed earlier, Faldio is absolutely sure that Alicia is a Valkyria. Soon, the day of the attack arrives. Squad 7 assaults Bruhl and quickly forces the Imperial garrison to surrender, liberating the town. Alicia finds Welkin at his old house, where he admits that Isara's death has been tearing him apart and he has been grieving since her death, yet he cannot seem to cry. Alicia comforts Welkin by telling him he no longer needs to hold back his tears. The act of crying acts as a form of catharsis for Welkin, putting his anxiety to rest. He then exits to the house to find Alicia looking at a patch of newly grown Edelweiss flowers. Welkin and Alica then hold hands, silently affirming their relationship.

At the Imperial Headquarters, Maximillian announces that the Emperor, tired of the lack of progress in Gallia, intends to remove him as commander of the Gallian invasion. With only one month until his removal, Maximillian decides to mobilize all of his forces and force Gallia into a decisive battle at the Naggiar Plains, intending to use Selvaria to tip the scales in his favor. Meanwhile, in Gallia, Ramal tries to deal with Zaka replacing Isara, and finds comfort in Faldio's advice. Soon, the Gallian Military and Militia are mobilized to meet the Imperials, and Princess Cordelia goes to the front lines to raise morale, bringing a Valkyrur spear and shield to remind the people of her Valkyrur lineage. As the Gallians attack, Squad 7 is left in the rear in support. The battle swings back and forth, with Batomys appearing and Squad 1 crippling it. However, Selvaria arrives on the field and annihilates the entire Gallian force, including Squad 1. Ramal sacrifices himself to save Faldio. When he is brought back to the camp, Faldio is shellshocked. When Alicia arrives to try and comfort him, he merely apologizes to her and shoots her in the back.

Led by Selvaria, the Imperials continue to press the attack, repeatedly routing the Gallian forces. Not even Squad 7 is able to stop the Valkyrur. Meanwhile, back in the camp, a desperate Faldio takes Princess Cordelia hostage and steals her ragnite shield and lance. He reveals Alicia's Valkyria ancestry to Cordelia and tries to wake Alicia, but has limited success. It is only when Welkin's call for retreat over radio is heard that Alicia begins to react. Taking Cordelia's shield and lance, Alicia meets Selvaria on the battlefield. She effortlessly defeats Selvaria and begins attacking the Imperial forces, destroying the Batomys in the process. Caught off guard by the appearance of a Valkyria on the Gallian side, Jaeger orders all Imperial forces to retreat. Selvaria rescues Maximilian from the ruined Batomys and retreat as well. As the Gallians celebrate their unexpected victory, Welkins runs toward Alicia, who suddenly falls unconscious again.

Alicia is being kept isolated from Squad 7, while Damon decides to transfer her to the regular military to exploit her Valkyria powers. Welkins confronts Faldio about his crimes, with Faldio replying that he had no other choice or Gallia who'd have lost. Meanwhile, Selvaria fumes over her failure to protect Maximilian, while the prince is determined to take Gallia despite the loss at Naggiar. He still has a trump card in the form of a massive armored vehicle. At the Gallian camp, Alicia escapes when she finds out about her forced transfer and tries to reunite with Squad 7. The members of Squad 7, however, are reluctant to accept Alicia back into their squad, and she inadvertently hears their conversation. Alicia sadly accepts the view that she is now a monster, and decides to accept the transfer to the regular military, despite Welkin's pleas.

With Alicia on their side, the Gallian military scores numberous victories over the Imperials until they are pushed to their final stronghold in Gallia: Ghirlandio. Knowing that his failures will not go unnoticed, Maximilian declares that he is no longer the Second Crown Prince of the Empire, but the Emperor of his own nation that he will create. However, Selvaria is still troubled with her failure at Naggiar, but still believes in Maximilian. Meanwhile, at the Gallian camp, Welkin and Squad 7 are trying to contact Alicia, but are blocked by the Regular Army officers. Squad 7 attempts to force the issue, but instead cause a brawl. Cordelia pardons Faldio for his crimes, and then meets Alicia. Alicia requests that she make sure that Squad 7 and Faldio are safe until the end of the war. To fulfill her promise to Alicia, Cordelia requests Squad 7 stay behind to be her personal bodyguard. Alicia and the Gallian army travel to Ghirlandio, where they face off against Selvaria and the Imperials.