The Gangster, The Cop, The Devil May 2026

At the trial, K almost walks free due to a lack of physical evidence. In a final masterstroke, Dong-soo turns himself in to the police. Since he is the only survivor of K's attacks, his testimony is the "smoking gun."

Jung Tae-suk is a hot-headed detective convinced that a string of recent "accidental" murders are the work of a single serial killer. His superiors ignore him, but he realizes Dong-soo is the only living witness to the murderer. The two men strike a deal: The Gangster, The Cop, The Devil

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 At the trial, K almost walks free due

They find K’s weapon—a specific type of knife—and track his stolen vehicle. His superiors ignore him, but he realizes Dong-soo

Dong-soo provides the manpower and underworld intel. Intel: Tae-suk provides police data and forensic tools.

As they close in, K realizes he is being hunted by both sides and begins to enjoy the challenge, intentionally leaving clues to bait his pursuers. The Climax

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.