Heung-soo, a horny 18-year-old whose hobby is spying on college girls residing in a boarding house opposite his friend’s boarding house. a couple having sex catches him spying on them, chased by an angry man he finds himself with no choice but to run into the nearest empty room, which doesn’t go the way he hoped, as the room he walks into, is occupied by a naked woman, who might be his only hope to stay alive