The central character is a young woman and mother named Kim Myung-jun, who finds herself in a desperate situation. Her daughter is critically ill and in need of urgent treatment. In order to raise money for the expensive operation, the main heroine resorts to extreme measures. She makes the decision to kidnap a girl from a wealthy family in order to later demand a ransom. However, the situation spirals out of control: the kidnapped girl loses her memory, and her father and mother are seemingly killed.