The expedition's epic journey reaches its climax as men find themselves in a final confrontation with the Inuit mythology they've trespassed into.
An injured Crozier is brought to Hickey's camp where they speak briefly and Hickey requests Crozier's injuries be tended by Goodsir. Meanwhile, Lieutenant Edward Little tries to organize a rescue party to help Crozier, but the rest of the men refuse and instead continue to keep moving south. Goodsir speaks with Crozier regarding the current situation and Crozier tries to reassure him things will be alright, but Goodsir is despondent. He informs Crozier that when he's dead and his body is to be consumed, eat only the feet, preferably the soles if possible. Hickey summons Crozier where they discuss the nature of the Tuunbaq and Hickey admits Crozier is his equal and he thanks him for that.
Having given up on hope and knowing that Hickey's men will eat him, Goodsir poisons himself in an attempt to poison the entire group and cuts his wrists to mask the true cause of death. Crozier is forced to partake in the cannibalism but eats only the soles of Goodsir's feet just as he was warned. An increasingly unstable Hickey orders the men to drag their sled up a hill, where he reveals that he is, in fact, an impostor. He explains that he murdered the real Cornelius Hickey and assumed his identity as a way of using the expedition to gain transport to the tropical Sandwich islands, where he planned to desert. The Tuunbaq, though sick and injured, arrives on the scene shortly after this revelation and kills Hickey and most of his men, but dies in the process of ingesting their poisoned bodies as well as by Crozier choking it with a chain.
Crozier is the only survivor of the Tuunbaq's attack and Lady Silence soon arrives and nurses him back to health. While traveling south with her, Crozier comes across the dead remnants of his men and a barely alive Little who dies shortly after Crozier discovers him. Silence and Crozier travel to her village where it is revealed her name is Silna. Following Inuit custom, Silna is exiled for having "lost Tuunbaq", a fate she accepts without protest, and Crozier adapts to the Inuit way of life. When Sir James Ross and his interpreter arrive two years later, looking for the Franklin expedition, Crozier conceals himself from them and instructs the Netsilik hunter to tell them that everyone from the expedition is dead, the ships are lost, there is no Northwest Passage, and that "we are gone". After eavesdropping on the conversation, the series' opening scene, Crozier departs to hunt seal. He finds a hole in the ice and waits while a little boy sleeps next to him.