Called out by her stepfather, daughter-in-law Ryoko has her body restrained and is blindfolded. When her stepfather touches her waist over her underwear, she unconsciously reacts, her vagina wetting with arousal. Drenched in saliva, she is subjected to persistent, lewd tongue kisses, sucking her stepfather's tongue like a cock, gulping down his spit. When his cock penetrates her vagina, she convulses repeatedly, reaching climax over and over. Her husband's face flashes in her mind, but driven by stronger force than her husband's, her insides are ravaged by her stepfather's cock, overwhelming her with pleasure until she breaks down in tears.