Newly appointed female teacher Ran is serious and sincere by nature. However, she secretly copes with nightly sexual frustration through masturbation. When she confides in the vice principal about her struggles in the education field, she receives an unexpected suggestion. The vice principal advises her to use her mature body to resolve her issues. From then on, Ran begins a life torn between her responsibilities as a teacher and the release of her physical desires, becoming a plaything for men's lust. Her body sways between her duty as an educator and her instinctual urges. This conflict and fusion lead to a new development.