Manawan, 1977. A vehicle falls into a river near a Native community. Two Quebecers managed to escape, but five Atikamekws lost their lives. While the police conclude that it was an accident, the victims’ families are left with unanswered questions. A historical, poetic and choral tale, Soleils Atikamekw is inspired by the dreams, impressions and memories of the relatives of the five victims. In an intimate, humanistic approach, the filmmaker involves the families both in front of and behind the camera. Documentary and fiction come together in a deeply moving film about grief, injustice and memory.

During a training exercise in an abandoned open-pit mine, a crew of Canadian astronauts are interrupted by an Atikamekw elder, who asks them to deliver an important message to the spirit of his community on the moon.

Menacing smoke rises over the forests of Manawan. Shawnouk has lost touch with the traditions of the Atikamekw people, and he struggles with daily life on the reservation. His mother's boyfriend is a policeman, and though he means well, Shawnouk won't accept him as part of the family. There's so much missing in his life. One night, Shawnouk gets involved in a break-in. When the home-owner turns up, Shawnouk pushes himself between the man and the gun. In the end, he is the one with blood on his hands. He goes into hiding in the vast forests of Québec. In the search for his roots, he faces regret, pain and anger. Fire and smoke, the ancient trees, and the music of his ancestors help Shawnouk to face his biggest challenge: the confrontation with himself.

Mohawk archaeologist Baptiste Asigny engages in a search for his ancestors following a tragic terrain slump in the Percival Molson Stadium.

Mani, a master’s student, returns to the reserve in northern Quebec where she grew up. Her painful past resurfaces. Resolved to reintegrate into the community, she gets involved in the debate around a referendum on allowing the free sale of alcohol on the reserve. Laura, a bootlegger, pockets the profits she makes there under the protection of the band council and her partner Raymond. The latter is still angry with Mani, whom he holds responsible for the death of his daughter in a fire. Opposing forces quickly divide the community into two sides who face each other to determine the best path to independence.