From his past lives to his current lives; inevitably due to fate—Cha Jinwoo coincidentally met Oh Yoosung, a class friend of his little sister he went to pick up after she finished her SAT and he, his work. Jinwoo got into a car accident after dropping off his sister and giving a ride to Yoosung. Because of that, he realized the lover of his previous lives was Yoosung…Jinwoo who is trying to hold onto fate, and Yoosung who is trying to escape fate due to his painful reality. What will lie at the end of crossroads of these two men?