Hannah Jannok lives in the middle of the deserted Finnmarksvidda in northern Norway, miles away from her friends. Her father forces her to follow the Sami traditions instead of her dream of becoming a scientist who will solve the climate crisis.

She wanders out on the plain to get away, but then she meets the mysterious goddess Aurora Borealis, and everything changes. Together with her little brother, she embarks on a journey into the Northern Lights in search of finding the solution. They visit worlds they never imagined they would get to see. At the same time, the brilliant scientist Katrín is carrying out a groundbreaking project to solve global warming. When everything goes wrong, everyone turns to Hannah.

Hannah finds hints in thousand-year-old Sami symbols that hold the clues to saving the world from global warming. Now she must stand up against her father and find her way back to her Sami roots. That's the only way to solve the riddle to save the world. Will she make it before it's too late?