Karen hasn't seen her sister in many years and she is both shocked and excited by what she has become. Po is now a girl with little understanding of normal standards of decency. But Karen is determined to be a good example to her wayward sister.
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.