This is a 100% pre-produced drama. Filming began on 2016-Oct-17 and finished on 2017-March-06. It’s was specially aired on jTBC for the broadcast channel’s 5th year anniversary.

Kim Sul Woo is a mysterious National Intelligence Service (NIS) agent whose identity is known only by a few superiors at the top of the agency. As a highly skilled and suave agent, he can accomplish any and every mission he is assigned. When a large conglomerate, Songsan Group, is identified as a threat to the country, Sul Woo needs to go undercover again. One day, he is ordered to infiltrate a private party held by Chairman Victor, a Russian oil tycoon, and extract the legendary wood carvings hidden in the compound. However, his best cover is to get himself attached to world star Yeo Woon Guang as his elite bodyguard, and so begins a whole new unexpected mission for Sul Woo. Woon Guang was a nameless stuntman who became a top star through unexpected good fortune after starring in a Hollywood hero series called, "Dark Death." He is in his forties and now specializes in acting as a villain. The often childlike Woon Guang is constantly involved in some scandal, and despite his occasional innocence, the world star is conceited and brash. He bullies Sul Woo, who panders to his every whim. Meanwhile, Sul Woo is preparing for his secret mission. Unfortunately, he also has to deal with Cha Do Ha, Woon Guang's manager, who used to be the head of his fan club, and is enamored with the celebrity. She is wary of Sul Woo, and anxious that Woon Guang may be interested in him, so she constantly gets in Sul Woo's way. While the secret mission must be completed, the seemingly perfect bodyguard and the world star's fan manager continue to collide, and their relationship may be something Sul Woo could not have expected.