The Gangster, The Cop, The Devil -

The investigation leads them through the gritty neon streets of Cheonan. The gangster’s henchmen and the cop’s unit play a dangerous game of cat-and-mouse with K.

Jang Dong-soo, a powerful mob boss, is driving home alone on a rainy night. A stranger intentionally rear-ends his car. When Dong-soo steps out, the stranger—a nameless serial killer known as "K"—stabs him repeatedly. Dong-soo fights back with terrifying ferocity, wounding the killer before K escapes. Dong-soo survives, but his reputation as an untouchable kingpin is shattered. The Uneasy Alliance The Gangster, The Cop, The Devil

Dong-soo provides the manpower and underworld intel. Intel: Tae-suk provides police data and forensic tools. The investigation leads them through the gritty neon