Aoi, a member of the track and field club, is tricked by her coach and manager into drinking a drink that turns her into a woman during a training camp, and ends up changing into a woman's body. - He tries not to let his feminization become known, but the club members find out and treat him as a sexist at training camp. - At first, she hated it, but her erogenous zones felt so good that she accepted it and turned into a woman!