Nightmare in Canada is a television documentary that delves into the history of Canada's horror film industry. Not only do Canadian horror films have a distinct look and style, they also explore fear and dread in a truly "tundra terror" way through themes such as "man against nature" and "fighting the evil that comes from within." Nightmare in Canada uncovers gems from Canada's film history that combat the stereotype that Canadian cinema is bland or aloof.

On October 4 1967 flashing lights could be seen in the sky, and an unidentified large object made contact with the waters of Shag Harbour, Nova Scotia. After investigations from the Canadian Coast Guard, the RCMP, and the Canadian Armed Forces and reports and speculation from witnesses, journalists, and UFO enthusiasts the event would later become the most well-known UFO incident in Canada. This documentary uncovers new witness accounts, photographic evidence, various investigation reports, and historical archives to examine exactly what happened on the coast of Nova Scotia that night, and how much information surrounding the case has been intentionally hidden.