According to Park Joon Su (Kim Soo Hyun) and Jin Cheonsa (Bae Suzy) : Love is when after so many years of trying to hate someone, you still end up loving that someone more and more.

A story about a man and a woman who wanted to break free from the past. He tried to run away from it, but ended up scarred. She tried to face it, but got struck by pain. 5 years later, how could two changed people deal with their unchanged feelings toward each other?