Cha Tae-sik, a reclusive pawnshop owner, lives a quiet life while maintaining minimal contact with the outside world. His only connection is a young girl named So-mi, who lives next door and often seeks refuge from her turbulent home life. So-mi's mother, Hyo-jeong, becomes embroiled in a dangerous crime ring involving drugs and organ trafficking, which unwittingly pulls both her and her daughter into perilous circumstances. When Hyo-jeong steals drugs from the crime ring and stashes them in a bag at Tae-sik's pawnshop, it sets off a chain of events that leads to her violent death and So-mi's kidnapping.

Tae-sik, driven by his bond with So-mi and a haunting past he wishes to escape, launches a relentless pursuit to rescue her. As he navigates the criminal underworld, Tae-sik reveals his lethal skills and unearths a vast conspiracy involving corrupt officials and a powerful crime syndicate. His journey through the perilous landscape uncovers painful truths and tests his resolve, forcing him to confront not only the villains but also his own demons. The depth of his commitment to saving So-mi becomes a heart-stopping struggle, intertwining his fate with the darkest corners of society.