After barely surviving a brutal attack by a sadistic serial killer, crime boss Jang Dong-su is left humiliated. Determined to catch the killer known as K, he forms an uneasy alliance with Jung Tae-seok, a relentless and incorruptible detective who often disrupts his illegal business. However, while Jang Dong-su wants K dead, Jung Tae-suk is determined to bring him to justice. With a deal in place—whoever finds K first will decide his fate—the hunt begins, blurring the lines between crime and law.

An old man attempting to harm the village's mystical guardian tree. An office worker, obsessed with beauty, tampering with her neighbor's packages. A mother making deals with ghosts to secure her daughter's place in medical school. A senior police officer insisting on handling a case alone, despite his junior's objections. A college student seeking fame on social media through horror content. These seemingly unrelated incidents are eerily linked by their intertwined relationships and a shared undercurrent of wrong choices driven by desire. At the heart of it all lies a sinister dark market. Once its true nature is revealed, there’s no turning back.