One day, Marina, a married woman, was molested on the bus and suddenly felt something. - A perverted man who was watching the situation threatened her and raped her at home. - After that, Marina, whose weakness is still being held, is forced to train her to expose herself to shame. - Although she is covered in guilt and shame towards her husband, the man's training awakens her hidden masochistic nature, and she falls into masochistic pleasure and turns into a sex slave...! - !