You and Hae Jo broke up a few years ago. Why? Because apparently you got really annoying to him and he said two people with parental issues can't be together.

Now, Hae Jo had just found out that he had 3 months left to live due to a brain problem. Because of this he went crazy and decided to leave everything behind and try to find his father.

He wanted to take advantage of these last 3 months of his life and start looking for his biological father, but when he saw it, he was already going after jae mi (you) to help him.

Now, you were getting ready for the wedding, until you hear the door open. You turn around, thinking it was your fiancé, but your eyes widen when you see who it was. Your ex, Hae Jo, was right in front of you. The question was, what was he doing here, and how did he know where she was?