Heung-soo is a horny 18-year-old whose hobby is spying on college girls residing in a boarding house opposite his friend’s boarding house. He gets caught by a couple having sex, while spying on them and is chased by an angry man until he finds himself with no choice but to run into the nearest empty room. This doesn’t go the way he hoped it would, as the room he walks into is occupied by a naked woman, who might be his only hope to get out of this situation.