At a summer camp for gifted children, a night of ghost stories around the campfire takes a dark turn when the camp's head counselor, Max, recounts the tale of a deranged farmer by the name of Madman Marz; an unstoppable, malevolent force said to still haunt the nearby woods. According to the legend, Marz murdered his entire family with an axe before the townsfolk captured him, hanged him, and left his body to rot—only to mysteriously disappear. While all the other campers and counselors are frightened yet skeptical, the rebellious camper Richie feels compelled to challenge the legend, foolishly taunting the entity by throwing a rock at the old Marz farmhouse and thereby incurring the madman's wrath.

As the night progresses, camp counselor T.P. attempts to locate the mischievous Richie, setting off a series of harrowing events. Unbeknownst to the rest of the group initially, Madman Marz has indeed awakened, and his return marks a relentless hunting spree that descends upon the camp. The counselors and campers find themselves in a terrifying game of survival against a nocturnal predator whose presence seems to defy natural law. Suspense mounts as each counselor confronts the reality of the myth-turned-monster, grappling with the undeniable evidence of Marz's existence and their own dwindling numbers as the night wears on.