"You Who Rolled In Unexpectedly"tells the story of TV drama director Hong Yoon-Hee and surgeon Bang Gwi-Nam after they get married ...Yoon-Hee (Kim Nam-Joo) is a TV drama director. She recently married the perfect man for her. Yoon-Hee has been afraid of having in-laws, specifically a mother-in-law. Because of this, Yoon-Hee looked for a guy who isn't closely connected to his family. If she couldn't find such a guy, Yoon-Hee planned on staying single. Finally, Yoon-Hee met Terry (Yu Jun-Sang). Terry is a doctor with a sweet personality, but, most importantly, he has adopted parents from America. Terry has no recollections of his real parents and was adopted by the Korean couple in America as a young child. Yoon-Hee's marriage life seems all se