Living in an apartment complex, Satomi Suzuki hurries home from shopping with an intense urge to pee. Having forgotten her keys, she can't hold it any longer and ends up urinating right in front of her door. A neighbor witnesses the act, and under his verbal commands, she is forced to touch herself. The next day, while her husband is away on a business trip, the same neighbor appears at her room, demanding her body once again. Word spreads quickly, and soon other residents gather and storm into Satomi's apartment, one after another.