2 families, a brother each, are taunted because of their sexuality and a sister is turned on by one. Revenge is sweet when both brothers can give the bully a taste of his medicine, and the sister can just have a taste.
Haruko is forced to take the sports massage from the male trainer of the girls team. He quickly changes the massage into an anal adventure that probes her deepest secret places. She plots revenge and makes a friend of the female assistant trainer using her brother to solve the girl's virginity problem that plagues her healthy mental outlook.
A married man wakes up with a younger woman who isn't his wife and quickly discovers that both she and his wife, among others, have plans for him and themselves at a special camp/retreat devoted to free love, naturism, and other wonderful notions, to which he adds proposals of his own.