A series of murders has shocked the nation. After repeated failures to catch the killer, the president himself gets involved in the case, and when the prime suspect dies during the investigation, the police department pulls out its last trump card. They create a fake killer, an “actor,” to close the case!

Choi Chul-ki (Hwang Jung-min) is the ace of the Metropolitan Investigation Team assigned to the case.
He’s not from the police academy, so he’s got nothing to show for it, but he accepts the boss’s offer of a guaranteed promotion and jumps into the case.
He uses his sponsor, Hae-dong Jang Seok-gu (Yoo Hae-jin), to set up the “actors” and put the finishing touches on the event against the public.

Meanwhile, prosecutor Joo Yang (Ryu Seung-bum), who is sponsored by real estate bigwig Tae-kyung Kim, resents the fact that Choi Chul-ki has Kim in custody for bidding irregularities and starts digging into his background…