After being told that she is on the borderline of competing in a competition, Erika, a member of the track and field team, applies to participate in an intensive training camp. However, when she arrives at the camp site, it is only Erika and the coach who are there. Taking advantage of the fact that there are no other team members, the coach touches Erika's body in a lewd manner as she does an air chair. Anticipating that Erika will not be able to resist, the coach presses the tip of his penis against the opening of Erika's vagina, claiming that he is trying to make her endure the air chair...Erika tries desperately not to drop her hips, but eventually her stamina reaches its limit and he gradually inserts his penis into her, centimeter by centimeter.