剧情：1959年，九名俄罗斯登山爱好者在乌拉尔山脉附近失踪，当他们再次被人发现时却早已死亡，死前仿佛受到巨大的惊吓以及非人力的强大外力的袭击，这就是著名的迪亚特洛夫山径事件，时至今日仍然是一个未解之谜。远在美国俄勒冈州的女大学生霍莉·金（Holly Goss 饰）对该事件深深着迷，在获得基金支持后，她联系到电影系学生詹森·戴伊（Matt Stokoe 饰）以及其他三名爱好者，决定前往当年的事发地点拍摄一部纪录片，试图解开悬而未决的谜题。最初的旅程快乐有如度假一般，但随着他们逐渐接近目的地，各种匪夷所思的事件接连发生，队员的心头蒙上不祥的阴影。 半个世纪前的噩梦即将在他们身上重现…… The film opens with a series of grisly black and white images showing bodies of the nine Russian hikers who died in the 1959 incident, with superimposed text stating they were found dead two weeks later after venturing into the wilderness of the Ural mountains. This has become known as the Dyatlov Pass Incident. We cut to a scene of University of Oregon psychology student Holly King (Holly Goss) who does a short description of the Incident and her intent to make a film together with her fellow student, Jenson Day (Matt Stokoe) for a university project. Their psychology professor, Dr Martha Kittles expects her students to "do more than come up with more than a believable explanation", and wants them to put themselves in the place of the original hikers in order to better understand why they did what they did. Day seems highly skeptical of the official account of the Incident, and declares that "we're gonna find out the truth". King further outlines the specifics of their trip to Russia, flying from Oregon to Moscow and then to Chelyabinsk, before reaching the mountain. Ominously, she outlines the etymology of their destination, Kholat Syakhl, the "mountain of the dead", supposedly named as such by the local Mansi tribe due to a "number of mysterious deaths and disappearances throughout history" Joining them are veteran climbers Andy Thatcher (Ryan Hawley), JP Hauser (Luke Albright) and audio engineer Denise Evers (Gemma Atkinson), also students from the university. The team trains on local skiing slopes until they depart for Russia on January 25th. The next scene is a news report on 5 missing Oregon students - ostensibly our protagonists, and describes a search by Russian authorities which discovered remains of a campsite with personal effects belonging to the students. Another news report then comes up, this time a Russian channel, which hosts several "experts" who offer theories ranging from a tragic accident to the "Yeti", to "extraterrestrial spaceships" to account for the missing hikers. Notably, the local inhabitants from the Mansi tribe interviewed have their own theory, where they believe that the disappearance is attributed to a "place where two worlds collide, where you can step form one world to another into the world of spirits". In a third (and final) news report, it is stated that authorities recovered video footage shot by the Oregon hikers, refusing to release the contents to the public, and a group of hackers managed to acquire and release the footage instead. Part of it is shot in night-vision mode, showing a terrified Holly crying in the dark while a unnerved Jenson tries to comfort her. The footage cuts to black. One month earlier. We have a scene of happier times, where our students have arrived in Russia and are taking a train from Chelyabinsk to the town of Evdel (sic). Holly starts interviewing the rest of her crew, questioning their rationales for coming along on the trip. Andy remarks on an angel wing tattoo that Holly has behind her right ear. They arrive in the town of Evdel, and set about attempting to interview a local inhabitant, Piotr Karov, who was the tenth and final member of the Dyatlov party, but fell sick at the last minute and had to back out of their expedition. Apparently, he had a mental breakdown after the Dyatlov incident and has been warded in the town's psychiatric facility ever since. The students approach the sanitarium, and an orderly-in-charge (Leonid Lutvinskiy) flanked by two other orderlies comes out, and angrily demands that they stop filming, later imploring that they leave and go home. Holly asks why they can't interview Karov, but the in-charge claims that Karov is dead, and again angrily demands that they leave before storming off. Moments later, the students see an old man in the window of an upper floor, and wonder aloud if that is Karov, before the old man holds up a hand-drawn sign with the Russian for "stay away" on it. Naturally, our students don't understand, but before Holly can ask the old man to clarify, he is escorted away from the window by two orderlies.