Kim Se-Hee (Yum Jung-Ah) is the chief director of a large hospital and the operator of a charity foundation. She is a highly respected doctor, but, unknown publicly, she is also the head of an illegal adoption organization that is run by Jung Hyeon (DEX). Kim Se-Hee holds a twisted belief that only superior genes should survive. In the case of a child that is adopted through their illegal operation and does not meet the adoptive parents' expectations, Kim Se-Hee's group provides a free refund for a certain period of time. When a child is returned by the adoptive parents, Kim Se-Hee's organization kills the child to destroy evidence of their crime. Kim A-Hyeon (Won Jin-A) was one of the refunded children, but Kim A-Hyeon dramatically survived. Now, she is the leader and a spiritual supporter of the survived children. She goes up against Kim Se-Hee for survival and revenge.
