My Husband Got a Family (2012)

Cha Yoon Hee is a successful TV drama producer, who has been afraid of having in-laws, specifically a mother-in-law. Because of this, Yoon Hee has decided to look for a guy who isn't closely connected to his family, and if she couldn't find such a guy, she was planning on staying single. Finally, Yoon Hee meets Terry, a doctor with a sweet personality who has no recollections of his real parents and was adopted by a couple in America as a young child. Yoon Hee's marriage life seems all set. But her marital bliss is shattered when her husband finds his birth parents and they happen to be her next-door neighbors with whom she bickers on a daily basis, and feature not one, but three sisters-in-law, and the usual array of aunts and in-laws.