Ji Sun-woo (Kim Hee-ae) is a respected family physician who has a successful career and married life. She is married to Lee Tae-oh (Park Hae-joon). Although he did not have a successful career, his dream is to become a well-known film director. Although he loves and cares for his wife, he falls in love with Yeo Da-kyung (Han So-hee), the daughter of a powerful and wealthy man in the city.

Thus Ji Sun-woo is unknowingly deceived and betrayed in various ways by her husband as well as by all of her neighbors, friends, and professional colleagues. As soon as these facts are revealed to her, she fights with them and seeks revenge. As a result, the story of The World of The Married flows through the obstacles she faces and the fate of her life and family, depending on how she faces them. Although the two are separated from each other, they do not agree to end the relationship easily. It is the unwillingness of a husband or wife to be defeated. 

It is the unwillingness of a husband or wife to be defeated. It makes a big difference in their social status and family life. They also make a big difference in their child’s life and he is not strong enough to manage them. However, Ji Sun-woo (Kim Hee-ae), an unwavering and courageous woman, continues her fight against society and individuals who oppose her until victory