In the remote, abandoned mining town of Shookum Hills, a team of urban explorers led by the determined Alicia Sanz and her skeptical brother Adan Canto believe they have found the ultimate adventure. They are joined by a local guide, the enigmatic and weathered Will Patton, who knows the area's dark history better than anyone. What begins as a thrilling expedition into forgotten underground tunnels quickly descends into a desperate fight for survival when the group accidentally awakens a terrifying, ancient predator that has been lurking in the darkness for decades. As the claustrophobic mines become a labyrinthine death trap, the explorers must confront not only the monstrous entity hunting them but also their own crumbling trust and hidden fears. Directed by Brad Parker, this intense horror-thriller masterfully builds a atmosphere of dread and paranoia, trapping viewers in a subterranean nightmare where every shadow hides an unspeakable devil below.