Taehwa receives a lung transplant from his father, who had committed a hit-and-run the night before the surgery. Riddled with guilt, Taehwa sets out to find the victim’s daughter Miji.

뺑소니범 아버지의 폐를 기증받은 ′태화′는 죄책감으로부터 벗어나고자 사고 피해자의 딸 ′미지′를 찾아 나선다.