Fact1: Russian government refuses to release it to public, Fact2: footage forms rest of film, Fact3: students In see man to be survivor upstairs window, Fact4: machine and eleven bodies were found at site as is commonly reported, Fact5: Holly return to camp without telling anyone about bunker
Output: Five Oregon college students set off to find out what happened to the nine skiers who mysteriously died in the Dyatlov Pass incident. Holly and Jensen are codirectors, J.P. and Andy are expert climbers, and Denise is the sound engineer. After the film introduces the characters, Russianlanguage news discusses the students disappearance. The Russian government recovers video footage but refuses to release it to the public; hackers release the footage, which forms the rest of the film. In Russia, the students first try to contact a member of the initial 1959 expedition who turned back after the first day. However, the man has been hospitalised following a nervous breakdown. The administrators at the hospital claim that he is dead and attempt to turn away the filmmakers. In an upstairs window, the students see a man they assume to be the survivor; he holds up a sign in Russian and is dragged away by orderlies. At a bar, the students recruit Sergei, who translates the sign as a warning to turn back. Undeterred, Sergei introduces them to his aunt, Alya, who was part of the first rescue team. She tells them that a machine and eleven bodies were found at the site, not nine, as is commonly reported. The final two bodies had something wrong with them. At their camp site, Holly hears howling. The next morning, the group notices barefoot prints in the snow that start and stop suddenly. Jensen claims the footprints are from yeti, but the others claim that Holly is messing with them. After hiking further, they again hear howling and find footprints that lead to a weather tower. Inside the weather tower, they find a human tongue. Denise wants to leave, but the others convince her to continue. Jensen reveals that as a teenager he had heard the howling during a bad acid trip that ended with his yelling incoherently about demons. Holly attempts to comfort Jensen by relating that she has had recurring dreams about Dyatlov Pass, which she interprets as fate. Unnoticed by the group two mysterious creatures move through the snow in the distance. The group arrives at Dyatlov Pass unsettlingly ahead of schedule. J.P. and Andy are further spooked when their navigational equipment malfunctions. Using a Geiger counter, Holly and Jensen are led to a bunker that locks from the outside. The door is already unlocked but frozen shut; they manage to open the door. They return to the camp without telling anyone about the bunker. The next morning, the group wakes to explosions that cause an avalanche. Denise is killed, and Andy suffers a bad fracture. After they fire a flare, Russian soldiers arrive, kill Andy, and chase the survivors to the bunker. J.P. is shot and wounded as they enter. Moving into a tunnel system a mysterious creature moves through one tunnel while the three enter another. Holly and Jensen leave the wounded J.P. as they explore the bunker. Inside, they discover evidence of teleportation experiments, a dead soldier who is missing his tongue, a camcorder that has footage of their present conversation, dead bodies stacked in a pile and files relating to the Philadelphia Experiment. J.P. screams, and Jensen and Holly find him under attack by teleporting mutants. The mutants kill J.P. and chase Jensen and Holly into a sealed room. There, Jensen theorises the tunnel that leads further into a natural cave is a wormhole. Unwilling to starve to death or face the mutants, Jensen and Holly choose to step into the wormhole. Since there are no controls, Jensen suggests that they visualise a nearby destination. Holly suggests the bunker entrance, and they enter the wormhole. In 1959, Russian military personnel discover two bodies. Soldiers chase away Sergeis aunt Alya, who had just stumbled across the bodies, and recover a video camera. They drag the bodies inside the bunker, which is fully operational and manned. The commanding officer orders the bodies to be stripped and hung on meat hooks. As the soldiers leave, the mutated bodies of Jensen and Holly, identified by Hollys neck tattoo, begin to revive.