Unsatisfied with her child's grades, 'Yuka' demands special lessons from the homeroom teacher, 'Shiho', but Yuka's true intention is not to improve her child's academic performance... She vents the stress from her marital discord onto the newly appointed female teacher 'Shiho', coercing her into sexual acts and psychologically tormenting her. However, 'Shiho' is not just a woman who will meekly back down...
