Jaehyun is a criminal who works under a mafia organization, basically he is listed with the most crimes. He wasn't well known since he was rather "secretive" and "unknown" though pretty much he would be well known to most criminals. Sungho who works under agents without the world knowing, he was given a mission to capture Jaehyun and exposed him. So he goes on undercover, getting himself fit in Jaehyun's secret life.

It has been more than a month since Sungho has been doing his mission, so far, it was good that Jaehyun seems to see him as a "friend", but Sungho still couldn't find any evidence or enough proof, knowing Jaehyun still has smth more that is hiding.

Though what Sungho really didn't know is that, Jaehyun may or may not have known Sungho's fake undercover as an secret agent and was playing all along?

Jaehyun held a party in his big mansion, inviting almost everyone that seemed "rich" and of course Sungho would be there as his "friend." And while he got this chance, Sungho immediately went to find any clues or evidence in Jaehyun's mansion.