Ten years after parting ways with her husband, Hisayo has been living alone with her daughter Yuki. One day, Yuki brings home her new boyfriend, Ryo, and Hisayo warmly welcomes him. Watching the intimate relationship between Yuki and Ryo, Hisayo becomes aroused and starts masturbating. Later, when Yuki is away and left alone with Ryo, Hisayo can no longer suppress her desires. She forcefully kisses Ryo and gives in to her lust, satisfying her longing.