A man develops a one-sided crush on a woman he sees by chance on the street. He follows her and finds out where she lives. He sneaks into her room while she's out, sets up a surveillance camera, and monitors her private life. Not satisfied with that, the man decides to move into the apartment where the woman lives. By chance, the room next door is vacant, so he can continue to watch the woman from the closest distance. The man's desire escalates with each passing day... and finally...!!