Kiyoshi Yoshida plays Sotaro, a popular television performer, who manages a one-night stand with country-girl Yuko (Yuko Katagiri). She falls madly in love with him, and he enjoys the home-spun attention. When Yuko agrees to a prenuptial contract demanding her silence about the vows and permitting Sotaro the luxury of an "open marriage," they wed in a secret ceremony. However, after a couple weeks of Sotaro's womanizing, Yuko is unable to handle the situation and she attempts to kill both her husband and herself. The resulting scandal costs Sotaro his reputation and career; Yuko is sentenced to a 3 year jail term. But when she gets released, they get back together and try to establish the marriage on a "firmer footing."
Kiyomi, a popular hostess at a bar in Shinjuku, has a traumatic childhood that makes her only sensitive to sexual intercourse with women. One day, the girl she loved as a junior hostess betrayed her and slept with her man. Uncomfortable with men, Kiyomi "swaps places" during sex with her new girlfriend, a trans woman Kaoru.
Yuko is an innocent high school girl who has a crush on her gym teacher. She and her friends have a sleep-over party which develops into a sexual dare-game involving eels, and a lesbian orgy. Now sexually-awakened, Yuko decides to seduce her teacher, but is raped in an elevator before she meets her teacher.