Jisoo, a college student in search of a distinctive way to indulge in self-pleasure, finds herself handcuffed while unclothed. However, just as she is about to relish her steamy evening, the key to the handcuffs slips from her grasp and tumbles beneath the closet. Convinced that the only individual capable of assisting her in this situation is the attractive ajusshi living next door, Jisoo heads over to his residence.