One night in the late 1950s, in the heart of the Southern United States, a truck transporting prisoners swerves unexpectedly to avoid another vehicle and crashes through a barrier. In the aftermath, rescuers sift through the debris and learn that two prisoners have managed to escape—a shackled African American man, Noah Cullen, and John "Joker" Jackson, a Caucasian man, due to what the warden called his sense of humor. Authorities decide not to pursue them too aggressively, reasoning that "they will probably kill each other before they go five miles." However, a large group of local men and their bloodhounds set out the next morning to track them down.
Despite their initial animosity towards each other, Noah and Joker are forced into collaboration, as they navigate their way through harsh terrain and inclement weather. Their first stop comes at a turpentine camp where they attempt to break into a general store, hoping to snag food and tools to free themselves from their chains. Unfortunately, this plan backfires and they find themselves captured by locals, who are quick to form a lynch mob. Just when circumstances seem dire, a man named Big Sam intervenes, citing his distaste for the crowd’s violent intentions. He convinces them to lock the prisoners up instead of executing them immediately, planning to turn them into law enforcement the next morning. However, that night, Sam, who knows the struggle of being a former chain-gang inmate, takes matters into his own hands and releases them.
As they journey on, they encounter a young boy named Billy who leads them to his home and mother, a lonely woman whose husband has abandoned her and their family. When Noah and Joker finally manage to break free from their shackles, tension brews in the air as the woman becomes enamored with Joker, contemplating a new life with him. She tries to persuade Noah to take a route through the swamp towards the railroad tracks while she and Joker plan to escape in her car. However, deceit lurks beneath her invitation; she sends Noah into the treacherous swamp with ill intentions, only wanting to eliminate the chance of him revealing Joker’s whereabouts if caught.
Infuriated by this betrayal, Joker races after his friend but is shot by Billy in the process. Despite his injury, Joker reaches Noah and warns him of the swamp's dangers just as the posse, led by the fair-minded Sheriff Max Muller, closes in. Hearing the distant whistle of a train, they sprint towards it, hoping for salvation. Noah leaps onto the train but Joker, struggling to keep up, grabs for his hand. In a tragic moment, they clasp tightly together, but Noah is unable to pull Joker aboard, and both tumble helplessly to the ground. As exhaustion overtakes them, they realize their only option is to wait for their pursuers. When the sheriff arrives, he finds Noah defiantly singing while Joker lies wounded in his arms, illustrating their profound yet complicated bond forged in the face of adversity.
