A young Woods Cree man named Almighty Voice (Gordon Tootoosis in his first film role) is arrested by the North-West Mounted Police.

Candy then spends two years hunting for Almighty Voice, but becomes disenchanted with the excessive force used by the NWMP.

[1] Chief Dan George plays the role of Sounding Sky, the father of Almighty Voice.

[1] Alien Thunder was filmed in Saskatchewan at Battleford, Duck Lake, St. Isidore de Bellevue, and Saskatoon.

During filming, Sutherland hired a local woman who ran a coffee shop in Bellevue to cook for him during the production, as there were few options for eating out in the small town.

[1] The RCMP, which had seen the film as a centrepiece of its 1973 centennial celebrations, withdrew its backing and asked that its name not be used in any promotional materials.

However, one critic noted that many of the script changes were apparently made by Sutherland, which contributed to the uneven nature of the story.

Michael Walsh, film critic for The Province in Vancouver, wrote: Alien Thunder, one of the most costly movies ever made in this country, was a project of epic potential and lofty ambition.