Miho, a young wife who will live with her father-in-law. Father-in-law who is lustful for Miho's young body and commits Miho. Then, when he sees a gap, he plays with Miho's body and trains him. Miho who will change even sex with her husband someday. To her husband who is pleased with the change of Miho, Miho can no longer confess her physical relationship with her father-in-law.