Jason Wu () is a beautiful high school girl. She wanted to be admitted to a Korean university, but only Dao () wanted to, so even though Dao was obese at that time, she accepted it. However, the condition of marriage is to be admitted to the Korean judicial examination and become a prosecutor. Finally, because the knife failed in the third round exam, it was abandoned by Crystal at the wedding.

Eight years later, Dao successfully lost weight and became a world-class golfer, but as a 34-year-old spinster, Crystal reached the lowest point in her life. When she came across a knife, Crystal decided to take it back. ...