Meisa Kawakita, a female college student, hires Shiozu, a close friend of her father and an expert in asset management, as her private tutor. She aims to become a financial planner and begins studying to deepen her knowledge. However, Shiozu becomes sexually attracted to Meisa as he notices her matured body. Meanwhile, due to business failures, Shiozu is burdened with massive debt and harbors jealousy toward his former friends who now live happy family lives. Seeking revenge, he sets his sights on Meisa. His true intention is to destroy her life and vent his own frustrations.