Misha descends to earth and greets Kotarou. Kotarou freaks out at her greeting and runs away. After an ordinary school day, Kotarou finds Misha again, accidentally injuring her. He takes her in and explains to Misha about how he has to do most of the housework after his mother died. Misha, sad by the event, volunteers to be his new mother and follows him everywhere, causing numerous troubles.