Jun Seo and Mi Yeon have been dating for a long time. Jun Seo grows tired of his girlfriend's unfailing love, and volunteers to do research work in Antarctica. One day, Mi Yeon visits him but he runs away, only to find out that she had been injured in a car accident the day before. Did she really come to meet him after falling into a coma? Jun Seo realizes her love and preciousness by retracing her steps.