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 worshiped 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 living conditions of many First Nations communities. Specifically, it highlights the recent struggle between the Kitigan Zibi First Nations reserve and the Canadian Museum of Civilization over the ancient ancestral remains of hundreds of indigenous people found in Algonquins territory. Gripping, informative and politically charged, Great River is a story told by the voices of the Algonquins of the Ottawa River Watershed.