Yuri, who is married to a man much older than her, goes on a trip with her distant stepson Takeshi to get closer to him. Takeshi, who is of a teenage age and sleeps in a different room, peeks at Yuri and gets his dick hard. This makes the stepmother and son close to each other instantly, and before you know it they've become a couple, desiring each other more than they can control with reason. They make love to each other with raw penetration and creampies, and the distance between them becomes closer than necessary...