3-year-old Sung-Min disappeared in a store. His parents, Jo Yoon-Seok (Park Hyuk-Kwon) and his wife Kang Mi-Ra (Jang So-Yeon), have searched for Sung-Min for more than 10 years. Finally, they get their son back after 11 years. The couple thought if they got Sung-Min back, their lives would return to normal. Tragedy, that first began when Sung-Min disappeared, still goes on.
