Marina has been married to her husband Sadao for four years and lives with her father-in-law Atsuo. Although she appears cheerful, energetic and happy, she has a secret. Six months ago, Sadao raped her, and they have continued to have a twisted physical relationship ever since. After she sends her beloved husband off to work with a bright smile, her father-in-law begins training her as a beautiful wife. Despite her words, "Father-in-law, please forgive me," her private parts start to overflow with love juice...