Kim Yongsun is turning 32 and her friends worry about her being single and lonely . The radio DJ has had several relationships but she never thought she found the right one. On her birthday, her assistant chooses 3 letters from fans and she will read them on air. The last one is from a colleague from High School and those words will shake the brunette's heart.  

Having faith is never a problem, when you put that faith on a wrong person, that’s your problem… But nobody can blame you from wanting the person, who doesn’t even know your existence...