Delphine, the sultry stepmom, indulges in her secret S&M fantasies alone, her body writhing in pleasure as she teases her bound wrists. She's interrupted by her unsuspecting stepson, who catches her mid-act. Instead of shame, Delphine sees an opportunity to introduce him to her kinky world. She commands him, making him her toy, as she flogs his bare skin, leaving welts that she soothes with her tongue.