Two couples—Bill and Diana, together with Dan and Jamie—set off on a motorcycle journey through the remote mountains of North Carolina in search of antique Civil War rifles said to be hidden in a cave on Whiskey Mountain, a relic tied to Diana’s family’s past. The trip begins with a stop at a small general store perched in the hills, where a wary tension arises as local marijuana growers in the area taunt and menace the group.
As night falls, the four campers feel they’re being watched by an unseen presence. The next morning, the wilderness erupts in danger when brush near their camp is suddenly set ablaze, adding to a string of unsettling misfortunes that push them toward aborting the expedition. A fog of fear surrounds them as they stumble upon a crumbling cabin deeper in the woods and encounter a deranged old man whose presence deepens the sense of creeping menace.
Undeterred, they press on and eventually locate what they believe is the cave concealing the historical rifles. Inside, they come face to face with the men they met at the store—Rudy, Jack, Homer, and Bowzer—a four‑man crew running a marijuana operation from within the cave walls. The discovery turns deadly as they overpower Bill and Dan, binding them inside the cavern, while taking Diana and Jamie back to their ramshackle cabin. There, the plan unfolds: murder the travelers and bury them on the mountain. In a brutal and disturbing sequence, the attackers rape both Diana and Jamie while documenting the assaults with a Polaroid camera, a crime that leaves Jamie catatonic with shock.
Meanwhile, an older mountain man who had crossed paths with the group earlier frees Bill and Dan in the cave. They manage to reclaim their motorcycles and attempt to report the kidnappings to the police, but the sheriff refuses to believe their story. With no other option, Bill and Dan decide to take matters into their own hands. They steal guns from a local store and return to the woods to confront the assailants.
A tense showdown erupts at the cabin as Bill and Dan mount an effort to save their companions. They manage to rescue Diana and Jamie just moments before the women would be forced to continue toward a grim fate atop the mountain. The skirmish ends with the attackers killed, though Dan pays the ultimate price, fatally wounded in the gunfire.
Emerging from the cabin into daylight, the trio spots a helicopter hovering above a nearby lake and descending toward the property, giving them a fragile sense of relief. They do not yet realize that the helicopter carries the sheriff, who is armed and prepared to open fire, turning their moment of relief into a new danger they have yet to face. The closing image lingers on the uneasy balance between survival and the ever-present threat looming from above.