In the deepest, darkest parts of a forest lived a strong and beautiful beast princess. Beckoned by the moonlight, she wandered into a land of humans, and in the moonlit garden of a small castle, she fell in love with a prince.

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.

While Hiro and Zero Two head to VIRM's home planet to defeat them, the rest of Squad 13 do their best to get life on Earth back on track.