Full Spoilers! When Yoo Geum-Bi, a 10-year-old girl, shows up at con-man Mo Hwi Cheol’s house claiming to be his daughter, he refuses to believe it and tries his best to find the girl’s mother or guardian to get rid of her. After spending time with her, however, he becomes fond of her and decides to be her father after all. Things get rough for the two when Hwi Cheol finds out that Geum-bi suffers from Niemann-Pick disease.