Each night, a homeless girl stays in abandoned houses to get by. In the winter, she leaves the cold environs of Seoul and heads to Busan, eventually finding an empty house in an abandoned part of town. She starts looking for a way to make a living, but it’s difficult to find a job with no home address, no ID card, and no phone number. She ultimately does find work, but her employer takes advantage of her and ends up firing her without paying any wages. No one seems to be on her side in this harsh and abusive world.

Hong-chae has never been in a relationship before and she's tired of the man who has been coming into her flower shop everyday for the past 2 years. She's scared of Jeom-dong who shows obsession and one day tells him that she's got a fiance so to stop coming through her co-worker Hae-wook. Jeom-dong stabs her and runs away. A year later, Hong-chae was living a normal life, without a thought about Jeom-dong when she meets him again. This time, he approaches her through her childish mother, Seon-ae, as her boyfriend. He starts showing crazy love towards them, desperate and violent...