An investigation of Canada's clandestine involvement in the Manhattan Project, from Gilbert LaBine's 1930 discovery of a rare radium deposit in the Northwest Territories to today's ongoing 2.6 billion dollar nuclear waste clean-up project in Port Hope, Ontario. Expert interviews, first hand testimonies, and generational accounts present a nuanced and thought-provoking examination of how these hidden histories have impacted the Indigenous Dene people of the Northwest Territories, Port Hope residents, and other communities worldwide.