Marina is a teacher who works at the same prestigious school as her husband. Although they have a good relationship, Marina is worried about her husband, who is only concerned with grades and does not get along with some of the students. Her worries come true a few days later, when her husband happens to be present when Kanzaki, a delinquent student, is bullying Okamoto, an honor student, and ends up pushing Kanzaki. After hearing the story from her husband, Marina calls Kanzaki the next day after class to apologize in person. However, Kanzaki, still angry, orders Marina to take off her clothes in front of him. Marina reluctantly shows her her naked body, but Kanzaki's desire knows no bounds and he commands her to atone for her husband's sins with his body...