Jessica Jung has been a single mother for four years. Her son's father left her believing that he wasn't good enough for her, but that wasn't true—he was perfect for her, he just didn't realize it. After waiting so long for him to come back she's finally trying to move on even though she'd vowed not to. Jessica is dating a great guy names Kim Jonghyun and her son, Minjun, seems to like him. That is, until his father moves back into town. 

Lee Donghae realizes that it was wrong to leave the love of his life, Jessica. Now five years later, he's back in town and he wants her back. He finally believes that he just might be good enough for her love. What he doesn't expect to find was that she'd moved on—most of the way, anyways—and that she has a son, his son. 

Can they reconnect after all the years apart and the things they never told each other? Or will their relationship be doomed from the beginning?

Love never really runs away...