Satomi, who lives in an apartment complex, feels the need to pee after shopping and rushes home, but forgets her key and wets herself in front of the entrance. Her neighbor witnesses the whole thing and plays with her as he says. The next day, Satomi's neighbor appears in her room, where she is unable to talk to her husband who is away on a business trip, and demands her body again. Other residents also hear about Satomi's wet herself and come into her room...