A jealous husband suspects his wife of cheating and often invites friends over to their house to ease the pressures of a strained marriage. One day, his wife, Risako, is visited by her husband's colleague, Yoshino, who comes over to show her sympathy and she ends up pampering him when her husband isn't looking... Then, late at night, when her husband falls asleep, Risako goes to Yoshino's room to stay the night...