While Hachi and Izzy search for a way to continue her mission without killing, Detective Inukai and Sargeant Suzuki discover the corpse of a missing student. Things come to a head at Detective Inukai's surprise birthday party.

With Izzy missing, Hachi is confronted by his father about his involvement in the killings. Meanwhile, Hachi's friends are attacked by Izzy's enemies, who are searching for her.