Several Indigenous communities north of Fort McMurray are undergoing a monumental shift in their relationships with the oilsands industry.

Fort Chipewyan's Indigenous leaders, who once partnered with environmentalists and hosted Hollywood stars like Leonardo DiCaprio and Jane Fonda, have now signed deals with industry.

Last month, the Athabasca Chipewyan and Mikisew Cree First Nations joined 12 other Indigenous groups in signing participation agreements with Teck Resources, which is developing the $20.6 billion Frontier Mine.

CBC News travelled to Fort Chipewyan to speak to the Dene, Cree and Métis communities about the mine.

Watch the mini-documentary above to hear how community members are grappling with the new direction the community is taking.

The Frontier Mine is under review by the Alberta Energy Regulator and the Canadian Environmental Assessment Agency.

Connect with David Thurton, CBC's Fort McMurray correspondent, on Facebook, Twitter, LinkedIn or email him at david.thurton@cbc.ca