Sara Aoyama (Kang Ji-Young) was an orphan and is now a single mother. She has suffered through poverty, lack of understanding from society and other problems that led to her being separated from her daughter. She believes that if she has money, her life will change. One day, Sara Aoyama sees a woman killing herself by jumping in front of a train. The woman who jumped looks just like her doppleganger. Sara Aoyama is stunned, but takes the woman's bag. Since then, her life takes an unpredictable turn.