Summary
NIS agent Park Seonwu goes undercover as a Café owner in an upscale area in search of a drug ring. Having obtained information that there will be a drug-fueled party, he gets into the party disguised as a coffee delivery man. A momentary misstep almost seals his doom, but he manages to get saved thanks to the timely intervention of a regular customer, Seo Yohan. Things escalate, and Seonwu and Yohan are unexpectedly connected physically. Feeling that Yohan could be holding some crucial information regarding the case, Seonwu asks for his help. Crazily in love with Seonwu, Yohan agrees only if they can become friends with benefits. Their bizarre relationship becomes closer and closer; however, just when things are finalizing regarding the case, Yohan suddenly cuts contact and is presumably killed in a car accident, which leaves Seonwu totally devastated. Three years later, a hardened Seonwu catches a glimpse of Yohan in footage from a new NIS sting—alive and well, now known as “Yohan Romanov,” a notorious Russian mafia member. Seonwu sets off for Russia, driven by betrayal and unfinished emotions, to meet the man behind the annihilation of his world.