The Reason I'm Getting Married All Seasons

Kim Ji-Won (Park Hee-Von) and Han Seung-Uk (Song Jong-Ho) have dated for about 6 years and they will get married in 3 months. Yet, their seems to be little excitement in their relationship Kim Ji-Won even asks Han Seung-Uk "Why are we getting married?" One day, while Kim Ji-Won is getting fitted for a wedding dress, she meets Lee Jun-Gi (Hong Jong-Hyun). He had a huge crush on her in the past.