The Devil Below

The mining crew prepares to leave the Shookum Hills Coal Mine. Schuttmann shares a heartfelt conversation with his son Derek about the risks and reckless behavior of their colleague, emphasizing the need for second chances. Their bond is suddenly interrupted by an unseen horror approaching them.

As Schuttmann attempts to protect Derek from the impending danger, he faces a brutal attack from the unknown entity. The violent encounter incapacitates him, leaving Derek alone to cope with their distressful situation in the eerie surroundings. It's a moment of horror that shapes their intertwined fates.

Years later, a team of scientists led by Arianne begins an adventurous expedition to uncover the mysteries surrounding the infamous Shookum Hills. The team members—Darren, Shawn, Terry, and Jaime—are driven by the desire to understand what led to the town's disappearance. They hope to uncover the secrets hidden in the past.

During a stop at a local store, Arianne seeks directions to Shookum Hills, but the storekeeper seems strangely unaware of its existence. His evasiveness raises Arianne's suspicion, and upon pressing further, he warns her to leave, subtly alerting an unseen force of their presence. This moment sets off a chain of events that threaten their safety.

The team encounters a dirt road blocked by an electrified fence and, undeterred, they break through to gain access to the long-abandoned Shookum Hills Mine. Initial excitement quickly turns to confusion as they navigate around improvised barriers left in disarray. This marks their entry into a world filled with danger and uncertainty.

While mapping the underground tunnels, Terry suddenly vanishes into the dark depths of the mine. Arianne and Jaime’s frantic search for him proves futile as he seemingly disappears without a trace. This shocking event begins to highlight the eerie nature of their exploration.

As Darren and Shawn explore the area, they encounter a furious local named Dale, who confronts them for intruding and tampering with the dangerous sinkhole nearby. In a moment of panic, the duo accidentally knocks him unconscious, an impulsive act that they will come to deeply regret as the events unfold.

Reuniting with her team, Arianne discloses the terrifying reality—they are not alone in the mine, merciless creatures lurk within the shadows. As panic erupts among the group, they flee into the surrounding woods, inadvertently leaving Shawn behind and leading to a tragic loss when Dale later succumbs to his injuries.

In a surprising twist, the group is rescued by locals led by Schuttmann, who reveals the horrifying truth of the subterranean threats. It's a revelation that exposes the sinister reasons behind the town's demise and the need for containment of the monstrous beings that have haunted Shookum Hills.

Arianne decides to return to the mine with Ellroy and Shelby to confront the creatures. During their harrowing journey, Ellroy selflessly sacrifices himself to redirect the monsters away from his friends, giving them a chance to escape. This act of bravery only deepens the tension within the group.

As they engage in a desperate battle against the creatures, Jaime inadvertently triggers a grenade while attempting to combat them. The ensuing explosion results in a catastrophic loss, claiming yet another member of their team. The emotional toll heightens as the group realizes their fight is far from over.

Darren reveals the expedition's true objective was to secure a rare mineral for a coalition of coal miners, shattering Arianne's trust in him. Overwhelmed by feelings of betrayal, she plans to return for reinforcements, but before she can, a lurking creature ensnares her, leaving her helpless.

After regaining consciousness, Arianne finds herself on a makeshift raft with Shelby's lifeless body beside her. As she approaches the lair of the creatures, she is reunited with a despondent Darren and Shawn, who reveal a chilling truth about the monsters' organized social structure, amplifying the intensity of their plight.

Faced with the queen creature, Arianne finds herself in a dire confrontation. As it attempts to sacrifice her, she uses her ingenuity to retaliate with a grenade, successfully striking the monstrous entity. This act demonstrates her courage and determination to survive against the odds.

In a bid for survival, Arianne and Darren partner to escape, only for Darren to succumb to the poison. Prioritizing Arianne’s safety, he makes the ultimate sacrifice. As locals arrive to help, Schuttmann offers Arianne hope, urging her to join him in his promise to protect the world from these monsters, marking the beginning of a new alliance.