Before marrying, Asami had an affair with her former boss and became addicted to sex with him. Even after marriage, her body cannot forget how he felt. Then a young man who looks exactly like that former boss moves in next door—and turns out to be her husband's adult son. The adult stepson is drawn to his young stepmother, while Asami is drawn to the familiar face of her old lover. Unable to suppress his feelings, he steals her underwear and makes an unexpected move. What does he do, and where will their adult role-play relationship lead?