Although she remarried to a wealthy husband, Chiaki, the beautiful mother-in-law, leads a boring daily life. She is handed laundry by her son and, smelling the long-awaited male scent, her suppressed sexual desire runs wild, leading her to intensely and lewdly indulge in masturbation. Seeing her son peeking, she provocatively shows off her body, further arousing him, and then leads him to ejaculation by playing with his erect penis through handjobs and footjobs, and performing oral sex. With a seductive smile, she licks her son's penis, deeply sinking her hips into it, greedily indulging in the pleasure and going wild!