Jo Seok Moo graduated from a prestigious university, but he pursued his dream of becoming a musician rather than finding a traditional job. Jo Seok Moo did not become a musician and because of his advanced age, he could not land a decent job. He then began working at a security service company. There, he met Kang Hwi Ru for the first time as his customer. They have have been married for 3 years now, but Jo Seok Moo asks for a divorce. They do not have very much in common. Jo Seok Moo has a stubborn personality and enjoys spending time alone, while Kang Hwi Ru is easy-going and has a positive personality. In front of them, the married couple of Jin Yoo Young and Lee Jang Hyun appear. Jin Yoo Young is Jo Seok Moo’s first love.