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!
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.
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.
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.
Nina decides to lead the charge in the competition against the 1st Platoon. Later, when something causes Zuellni to change course and head toward a group of Contaminoids, Layfon must join forces with Haia.
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 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.