The Cop, The Devil - The Gangster,

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

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. As they close in, K realizes he is

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. When Dong-soo steps out, the stranger—a nameless serial

The 2019 South Korean action-thriller centers on an unlikely alliance between a brutal crime boss and a rogue detective to hunt down a nihilistic serial killer. The Inciting Incident

K is sentenced to death and sent to prison. In the final scene, Dong-soo is sent to the same prison. As he enters the showers where K is hiding, Dong-soo smiles and says, "I told you there are three men who will risk their lives to catch you." If you'd like to dive deeper into this world: of the characters' moral gray areas Comparisons to the real-life "Cheonan serial killer" case

They find K’s weapon—a specific type of knife—and track his stolen vehicle.