Arrogant and self-centered PTA president Ayame Ichinose's son, Masaya, is a troublemaking student constantly causing incidents. His homeroom teacher, Yoshino, is repeatedly confronted by her over his recommendation issues, pushed to the brink by mounting stress. One day, Yoshino witnesses Masaya extorting another student, shocked by his malicious behavior. Upon learning this, Ayame reluctantly submits to Yoshino's demands solely for her son's sake, but her defiant attitude only fuels Yoshino's growing anger. He continues to aggressively humiliate and dominate her. Though Ayame maintains her pride despite repeated degradation, her repeatedly climaxed body draws closer to its limit. The story unfolds through their intense conflict and confrontation.