crime thriller · korean drama · police procedural · ma seok-do · yang jong-su · jung david · han ji-soo · dark atmosphere · ensemble cast · action
In the Philippines, Baek Chang-gi, former Special Forces, executes his defector worker Jo Sung-jae. Casino admin Chang Dong-cheol promises Baek a larger share for destroying a rival operation. Baek raids the rival server, stealing data, but Chang betrays him. Baek returns to South Korea for vengeance. Meanwhile, Detective Ma Seok-do investigates Jo's money laundering. Upon learning of Jo's gruesome death and the return of his body, Ma suspects deeper conspiracy. Jo's mother, seeking justice, commits suicide, fueling Ma's resolve. Ma joins the Cyber Investigation team, tracing data to a laundering joint where they arrest manager Choi Yu-seong. Discovering an online gambling ring, Ma seeks help from Jang Yi-soo. Ma Seok-do: The massive, muscular 'Monster Cop' leading the roundup. Yang Jong-…