Yeon feels that she is living a crazy life in hell. Her husband, Sang-Pil, treats her as an object for violence and her life suffers because of her husband's debt. Her last hope is that she can start to live in New Zealand with her only child who is autistic. But Sang-Pil's debt ties her down when she tries to leave Korea. So she decides to prostitute to pay the debt and leaves her child in a Coin Locker. Now, it’s the last night before she will leave Korea…

Coin Locker

High school teacher Gyeongseok agrees to look after his daughter Yunhui for his ex-wife’s sudden request. He brings Yunhui with him to the school where he works. There, he leaves Yunhui alone in the car briefly, and when he returns she’s gone. Later, Yunhui is found after having been grievously injured in a car accident. The driver of the truck that hit her, however, indicates that Seik, one of Gyeongseok’s students, was the true cause of the accident.