在回忆中，当一个巨大的污染獸袭击一个都市时，三个强大的战士挥舞着“天堂之刃”开始对抗它。目前，雷馮·阿爾塞夫离开他的都市参加潔爾妮的学院。与此同时，妮娜·安多克失去了她排的一名成员，并被迫寻找新兵。 雷馮抵达潔爾妮时，两名学生开始战斗，导致另一名学生倒塌。在接到心灵感应命令拯救她之后，雷馮以令人难以置信的速度将她从建筑物中带走。他会见了学生团体的主席卡利安·羅斯，他迫使他进入军事艺术排，目睹雷馮拯救梅珍的妮娜将雷馮招募到第17排。之后，雷馮遇到了菲麗·羅斯，这是第17排的另一名成员，他早些时候向雷馮发送了心灵感应信息。那天晚上，雷馮回忆起他是过去曾对抗巨型林贝肯的战斗机之一。

回忆起一场战斗演习，捕捉了潔爾妮和另一个潔爾妮失去的都市学生之间的旗帜情景。 妮娜将雷馮介绍给第17排的成员，并在练习决斗中与雷馮作战。虽然雷馮表现不错，但是他被妮娜的气爆炸送到了墙上。之后，菲麗面对雷馮允许妮娜击败他，并透露她的兄弟卡利安计划强迫雷馮进入军事艺术。 雷馮在兼职期间遇见了妮娜，Nina透露她离开了她的父母去学习潔爾妮的军事艺术。第17排进入了对抗第16排的旗帜战斗场景，并且表现不佳。当妮娜即将被击败时，菲麗将妮娜的想法传递给雷馮，雷馮利用强大的一阵to击败第16排成员，让旁观者惊讶不已。然而，妮娜和菲麗对雷馮，妮娜非常愤怒，因为他在战斗期间刻意挫败了他的力量，而菲麗因为他没有。

After intruders attempt to steal Zuellni’s electronic spirit, a painful incident from Nina’s past is revealed, shedding light on her motivation to grow stronger.

Though she’s reluctant to rely on her powers, Felli may be forced to use her special abilities when she and her friends fall under attack at an abandoned research lab.

Zuellni falls into a massive nest of Contaminoids! As Nina leads the Military Arts students into battle, Layfon stays behind, convinced it’s a suicide mission. If he doesn’t join the fight, all could be lost.

Layfon accepts a temporary spot within the ranks of the Municipal Police. His first task: stop a group of undercover espionage agents.

Nina’s grueling training schedule causes her to fall ill. With their leader out of commission, Layfon and the rest of the 17th Platoon must depend on teamwork to defeat a powerful Contaminoid.

The 17th and 5th Platoons must work together to investigate a city left in ruins by Contaminoids. During the mission, Gorneo shocks Nina when he reveals information about Layfon’s secret past.

New information shared by Gorneo forces Nina to consider Layfon’s future with the 17th Platoon. Meanwhile, Leerin finds herself in serious danger as a direct result of Layfon’s past.

Faint signs of life are detected within Gandweria, but as the 17th and 5th Platoons search the ruins for survivors, Shante’s lingering hostilities toward Layfon put everyone in grave danger.

During a trip to a resort, Kalian can barely handle it when Layfon tries to teach Felli how to swim. The tension only grows when the sudden appearance of terrorists leads to a hostage crisis!

Hostilities grow between Sharnid and the members of his former Platoon. Later, Layfon’s investigation of a drug-dealing operation leads to a confrontation with a mysterious mercenary from Glendan.

Nina confronts Dinn about his Overload use, warning that the authorities might be catching on. Later, Kalian has a mission for Layfon, Nina, and Sharnid - and they’re going to be working with Haia.

During a competition, the Fallen One inside Dinn is captured by Haia, forcing Layfon to take action. It will be up to Dalsiena to find a way to separate Dinn from the spirit possessing him.

The 17th Platoon heads to training camp to prepare for their upcoming competition. Complications soon arise between Layfon and Mayshen - and just as they seem to be working it out, disaster strikes.

Layfon engages the Contaminoids alongside Haia’s group, and as the battle rages, the rest of the 17th Platoon watches and learns. Unfortunately, Nina is nowhere to be found after her visit to see Zuellni.

After her encounter with the Fallen One, Nina is somehow transported to Myath. Meanwhile, Kalian confronts Layfon, ordering him to rest for the impending battle against the Contaminoids.

Nina and Leerin face great danger and treachery when they take on those coveting Myath’s electronic spirit. Back at Zuellni, Layfon helps turn the tide of battle against the Contaminoids.

With a battle against Myath looming, the 17th Platoon is happy to have Nina back after her mysterious disappearance. Unfortunately, new troubles arise when Felli lands in Haia’s clutches.

Felli’s safety is on the line as Layfon and Haia clash. Later, the battle between Zuellni and Myath looks like it might be postponed when an ominous presence appears in the distance.

An encounter between Zuellni and Glendan seems inevitable, and Myath is still lingering in attack range. Just as tensions reach a boiling point, a new threat appears in the sky.

As Layfon and the others search desperately for the missing Nina, the 17th Platoon is caught in an ambush perpetrated by a villain who has been lurking very nearby.

When the Fallen One possesses Savalis, Layfon might not have the power to survive. Everything he holds dear is on the line - and the fate of Zuellni is in his hands.