Fukama-sensei discovers a mysterious notebook that allows him to compel students to perform sexual acts under the guise of "guidance." He targets the popular and virtuous Megumi Fujimiya, hypnotizing her into believing that sexual intercourse with him is a mandatory requirement for her school credits. After claiming her virginity, Fukama-sensei uses the notebook's power to manipulate Megumi's desires and orchestrate a deceptive alibi involving her boyfriend to hide the teacher's influence.
Fukama-sensei sets his sights on the elegant Tachibana Yayoi, a refined student who is secretly engaged to another teacher, Iida-sensei. Using his hypnotic "sex life guidance" notebook, Fukama manipulates Yayoi into a series of sexual encounters, exploiting her lack of experience and her fiancé's abstinence. While Iida remains oblivious to the betrayal, Yayoi is brainwashed into submitting to Fukama's desires, eventually accepting him as the one to lead her into womanhood.