Aki Sasaki has taken care of Kinoshita, a friend of his son who lost his mother early. Kinoshita has harbored a secret admiration for her beautiful girlfriend. One day, Kinoshita, who has seen Aki's ripe body for some reason, realizes that her longing has changed to her love with sexual desire. Kinoshita greedily seeks Aki's body. On the other hand, Aki gradually begins to seek her Kinoshita, knowing that her relationship is forbidden.
