Yurie Kazama is suddenly called to her husband's school by a colleague, informed that her husband has been involved in an incident with a female student. She hurries to an empty classroom after school, anxious and confused. Soon, the homeroom Japanese teacher—someone who often visits their home—appears, pretending to explain the situation, but quickly begins touching her body. Amid rising tension and fear, the lustful gaze of another man intensifies the chaos, drawing her into an uncontrollable situation.