Squad 13 is sent back to The Garden to undergo some tests, the place where they were raised. They are greeted by the Nines, Zero Two's former squad, and their leader Nine Alpha who wonders what Zero Two, formerly coded Nine Iota, saw in them. Disobeying orders, Hiro and the others visit the old facilities where they used to live hoping to meet Naomi again, but she is nowhere to be seen and the adults refuse to tell them where she is...