After traffic cop Beom-Su helps Hyeon-Ju, who gets involved in an accident while driving a car without license, they start a long lasting friendship.

Beom-Su dreamt of becoming a baseball player once, but due to his limitations, he decides to become a referee instead. Hyeon-Ju studies acting at a university in the district and exchanges letters with Beom-Su from her dormitory. Before Hyeon-Ju goes abroad, Beom-Su confesses his love to her. Three years later, Beom-Su becomes a professional baseball umpire and is full of anticipation when he hears that top star Yu Ha-Rin is none other than Hyeon-Ju. Even though Hyeon-Ju is now with Ji-Min, the young president of an advertising company, she has kept Beom-Su in her heart.