Park Kyu-jung is a man who outwardly adheres to strict principles, but secretly harbors an exhibitionist fetish that contradicts his public persona. This fetish has grown to the point where even minimal bodily exposure excites him. In a rebellious act, Kyu-jung masturbates outdoors, only to be discovered by Jung Sun-jung, a resident of his apartment building. Unexpectedly, Sun-jung approaches him with an intriguing proposition.