Driven to the edge by a life falling apart, Hayun makes a desperate choice: selling herself to Jun-hyeok, the man she has secretly loved for years. To her, it’s a heartbreaking end to her unspoken crush, but to him, she’s just a "bought woman" to be toyed with and humiliated. However, once her true identity is revealed, his cold-blooded contempt ignites into a dangerous, dark obsession. Now, he refuses to let her go. Can they survive the twisted fate sparked by secrets and raw desire?