When the Chipeweyan camp nearby succumbs to deadly influenza, the boys help with supplies and nurse the survivors, while Angus travels south in search of medical help.

The boys and Awasin's sister, Angeline, set out to the still frozen north by dog sled and cariole and eventually meet up with Peetyuk's people, with whom they stay until the thaw.

The medicine man tells them the story of the heroic Viking known as Koonar and claims that a curse will descend on anyone who disturbs his rest.

Planning to take the artifacts to Churchill, the travelers set out again, this time by canoe, and brave the treacherous Big River which leads to Hudson Bay.

Lost in the Barrens II: The Curse of the Viking Grave, a film based on the novel, was made for television in 1991, directed by Michael Scott.