Marina, a teacher who works at the same preparatory school as her husband. Their relationship was good, but she was worried about her husband, who only cared about grades and had a bad relationship with some students. That worry came true a few days later when her husband happened to be present at a scene where the delinquent student Kanzaki was bullying the honor student Okamoto, and he pushed Kanzaki away. After hearing the story from her husband, Marina summoned Kanzaki after class the next day and apologized directly. However, Marina is ordered by Kanzaki, whose anger doesn't subside, to take off her clothes in front of him. Reluctantly, she shows her naked body, but Kanzaki's desire knows no bounds, and she is ordered to atone for her husband's sins with her body...