Why I'm Getting Married

Seung Wook and Ji Won have been dating for 6 years and they are about to get married. However Ji Won is upset at Seung Wook's unenthusiastic attitude towards their wedding. One day, Joon Ki, who used to like Ji Won and Ji Won meet by coincidence. Ji Won gets confused who to choose. And one day, she finds something her late father left behind and finds out about what happened between her father and Seung Wook. Seung Wook and Ji Won face so many obstacles while preparing for the wedding. Will they be able to get married?.