Graduate Jo Suk Moo decided to pursue a career in the music industry, but failed to succeed. Because of his advanced age, he was unable to find a decent job and started to work at a Security Service Company. Joo Suk Moo's first client was his wife Whi Roo. While being married to her for over three years, he has applied for a divorce as they have little in common. Suk Moo bumps into his first ever love Yoo Young, who is now married to Jang Hyun.