Miho Saegusa, the attractive daughter of a tea ceremony master, currently teaches at a prestigious school. Miho, who commands respect from her students, becomes engaged to Okazaki, a colleague and the son of a school board member. One of her students, Michiru Tayama, who is aware of the engagement, plots to humiliate Miho because she was suspended for having a sexual relationship with her boyfriend. Michiru sets up Miho's fiancé, Okazaki, and exploits Miho through blackmail. The female teacher, bewildered by the clumsy and unacceptable conditions, has no choice but to comply. Miho's true nature is exposed under the reality of her lewdness and madness...