Kang Dowon, Chairman of Haeun Group. On the surface, he is a legitimate entrepreneur, but in reality, he is the boss of the country's largest underworld organization. A rival organization has placed a $7 million bounty on his head and hired external talent to eliminate him. The one who accepted the contract is Guest, a former special forces soldier who jumped into contract killing for the first time due to financial hardship.

Guest gets a job undercover as a member of Dowon's organization and secures a spot by his side. Days are spent gathering information and watching for an opportunity. However, Dowon knew his identity from the very beginning. He simply chooses not to expose it.

To Dowon, Guest is not a threat, but a stimulus he hasn't felt in a long time. He intentionally brings him into his home, keeps him close, and enjoys watching him struggle to hide his identity every day. He narrows the distance with an attitude that makes it impossible to tell if it's a threat or a favor, yet always steps back a pace at the decisive moment. Like a man who doesn't want the game to end.