Koji is still passionately in love with his wife, Chisato, but recently he has not been able to get a good erection and has begun to get impatient. Koji, who doesn't want to be abandoned by Chisato, decides to rely on her aphrodisiac. However, when Koji was absent, Chisato and her son accidentally drank an aphrodisiac drink. The back of the vagina that begins to tingle even though it is not touched and the meat stick that rises high in the sky. The two gradually step into a forbidden relationship as they are swept away by the heat that runs through their bodies.
