With the squad still feeling the aftershocks of the previous mission, things come to a head as the leaders run out of patience and decide to summon Strelizia back to the front lines.

The information regarding Hiro's condition changes the entire dynamic of Squad 13, much to Zero Two's chagrin. She only wants to speak to Hiro, but people stand in her way one after another.

The fierce battle to take the Grand Crevasse begins, and Hiro is forced to watch from the sidelines. Zero Two may have left, but Squad 13 is still concerned about the way she fights.

Humanity's operation to wipe out the klaxosaurs once and for all begins, and APE sends Strelizia to take control of Star Entity, the enemy's biggest weapon. However, the klaxosaur princess has other ideas.

The gang heads off to space to fight in what they believe to be the final battle. Meanwhile, Kokoro and Mitsuru stay behind to fight a battle of their own.