Trapped in domestic violence, med student Lucy relies on a mysterious man named Daddy for comfort. Her world falls apart when strict anatomy professor Ethan shows up—his voice matches Daddy’s perfectly. When her gambling father sells her to gangsters, Ethan saves her and takes her in. Torn between her crush on Ethan and loyalty to Daddy, she grows intimate with him after he pays a huge sum to free her from an underground auction. She misses her date with Daddy to care for her dying mom, and Ethan arranges a life-saving kidney transplant for her mother. Finally, Lucy meets Daddy at a hotel and learns the shocking secret: Ethan is Daddy.