Byun Ji Sook, struggling under her father’s debts and loan sharks, dreams of a better life. When she meets Eun Ha, a wealthy woman who looks just like her, Ji Sook seizes the opportunity to assume her identity. She enters an elite world, where she meets Min Woo, a chaebol heir who is drawn to her sincerity. But how long can Ji Sook keep up the facade and hide her true self?