Jenkhwan, an architecture freshman who loves competition, loses a bet with his good friend Pod and has to dress as a woman for high school graduation. By chance, he comes to save comm arts freshy Pin from a drunk. Somehow Jenkhwan's name ends up on the girls' dorm list. At first, he intends to clear things up and have his name moved to the men's dorm list. But Pod proposes a new wager. As someone who never surrenders, Jenkhwan's next move is to become Jenny.