A shocking announcement comes with the loss of another contestant, while those who remain are dealing with deception and drama, including accusations of theft, the discovery of a bloody scene in the woods and arguments over food rationing. Elsewhere, Victoria suffers a frightening hallucination after being tricked by Esther into eating uncooked mushrooms.
The group have to pick up the pieces after a devastating fire. As some deal with feelings of lust, others are anxious about surviving in the Siberian wilderness with a lack of food and a possible tiger nearby.
A mysterious light appears in the Siberian night sky and seems to alter the intimate relationships that the contestants are beginning to form. At the same time, Sam offers Daniel advice on his love life; Natalie sends mixed emotions to Anne-Marie; Carolina reveals some big news to Johnny; and Neeko tries to take control of his fellow players.
The intensity of the contest heats up as real and surreal events create anxiety, mystery and jeopardy. Esther proves her prowess as a strategic player while Carolina's admission rocks them all. A major injury and a mysterious sighting in the woods create fear and panic, eventually sparking a manhunt for one of the group.
Johnny, Joyce and Daniel tell the others about the bloody scene they found at the abandoned producers' base camp; some of the contestants freak out over the prospect of having to fend for themselves in the wilderness; Esther is attacked verbally; Sam gains possible insight from Miljan's century-old Russian diary; and the appearance of a radio-tower beacon offers a glimmer of hope.
One contestant seems on the brink of insanity and needs to be restrained, while another comes close to death as everyone must deal with plunging temperatures and a loss of hope after some members of the group set off to explore the beacon, while others stay behind to find food and clothing at the abandoned producers' camp.
A fast-moving and thick fog hampers efforts to find several contestants who mysteriously vanished; at the same time, Joyce, Johnny, Sam and Daniel continue their trek towards the beacon, which is no longer visible to them. Meanwhile, freezing temperatures put everyone at risk; and those left at camp make a horrifying discovery.
Carolina, Daniel, Sam and Johnny enjoy the comforts that the research station has to offer as they learn more about the history of the Siberian wilderness, while back at the cabins, the effects of starvation are experienced; and a missing contestant returns with a shocking story to tell, one that spurs Sabina and Neeko to look for a rifle.
Neeko, Miljan and Sabina fear the worst after they are taken captive by a hostile tribe. Meanwhile, Joyce, Sam, Johnny and Daniel discover evidence of deadly science experiments being conducted at the research station.
Season 1 ends with a reunion between the contestants after Evenki natives show Miljan, Esther, Irene, Annie, Neeko and Sabina the path to the research station. Later, a so-called rescue party may in fact pose a dangerous threat to the group.