Squad 13 heads back to the Garden for testing, with Zero Two's emotional state worsening by the day. They run into Nine Alpha, who offers some insight about her, but the most revealing words come straight from the horse's mouth...

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.

Having seized Gran Crevasse, emissaries are sent out to demand the surrender of the klaxosaurs' leader. Meanwhile, the Nines visit Squad 13, and there a shocking discovery is made.

Squad 13 is told they will be abandoning Mistilteinn soon, and they decide to go out with a bang by making one last memory of their lives there.

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.

There appears to be no escape from the impending destruction of Earth. But at the end of the world, Zero Two decides that she will keep her promise, no matter what.