Min-woo lives with Sang-mi, an insurance queen who receives an annual salary of hundreds of millions of dollars, but when he sees his wife on the road to success, he feels inferior and gradually despises her, who increasingly ignores him. Jeong-gook, a patriarchal character, is a successful businessman but has a personality conflict with his wife, Hae-mi. At an accidental opportunity, Min-woo and Hae-mi, as well as Jeong-gook and Sang-mi, both develop an affair and enjoy secret meetings in and out of each other’s houses..