A team of world renowned rock art experts gathered together to investigate the defacing of a sacred First Nations rock art site that had been worshipped for 10,000 years. The film explores the history of the 150 years of cultural and social genocide perpetrated by the Canadian government towards First Nations people living in Canada. "Great River" also examines the current Third World quality living conditions of many Canadian First Nations communities. Specifically, it highlights the recent struggle between the Kitigan Zibi First Nation Reserve and the Canadian Museum of Civilization over the ancient ancestral remains of hundreds indigenous people found in Algonquin territory. Gripping, informative and politically charged, "Great River" is a story told by the voices of the Algonquin's of the Ottawa River Watershed.