As a result of a traffic accident involving a violation of the centerline, the perpetrator dies, and the victim falls into a coma. After some time, the wife of the perpetrator, Hee Joo, returns. Hee Joo is bewildered at the fact that the victim’s wife Young Nam is also working at the factory where she goes to work. By accident, Hee Joo becomes close with Young Nam’s daughter Eun Young and learns a new fact about the incident.