Jang Sae-byeok, a very cheerful and positive girl, tries to find a new meaning in life after she receives an eye cornea transplant from another girl of the same age. To express thanks to the doner’s family, Sae-byeok visits the bereaved family of the dead girl, Na-yeong. But Na-yeong’s parents who even have no idea that their daughter was killed by traffic accident are shocked to fall in a faint. But as time goes by, Sae-byeok becomes close with Na-yeong’s family and the family, who become to be aware that Sae-byeok is an orphan, slowly accepts her as a daughter.