While chasing after a cat that stole her breakfast, Nano runs into a student, blows up and finds herself up on a roof with a missing arm. Yuuko goes through desperate means to keep her octopus sausage from being sullied, while Koujirou Sasahara makes a scene at the school's opening ceremony over bringing his goat to school only to be shot and reprimanded by Misato Tachibana, and Yuuko tricks Mio into pressing the fire alarm. Later, Nano begs her creator, the Hakase, to remove the noticeable windup key on her back, but she refuses because she thinks it is cute.