Prologue: Childhood Sweethearts

Childhood. Everyone has a different childhood story growing up. Fond stories, memories, photographs. These were at times embarrassing but mostly heartwarming when one looks back on it. Ye Jin and Hyun Bin's childhood revolved around each other. With their parents being high school best friends, playdates were common growing up. As their relationship continues to develop, the childhood sweethearts may just find themselves wishing to be more than friends. Will our "close friends" take the next step? What happens if they have to go their separate ways? Will their friendship survive? Will their love survive?