One night, Shinji is staying at a friend's house. He wakes up in the middle of the night and sees his friend and his beautiful mother devouring each other's genitals and moaning loudly. Shinji is excited by the perverted behavior of his friend's beautiful mother, so he returns when his friend is out. Shinji tries to get her to have a relationship with him in exchange for keeping their incest a secret, but at first the beautiful mother refuses, but after he licks and plays with her hairy pussy, she reveals her lust and takes Shinji's big dick in her mouth, asking for intercourse.