True Heart is a 1999 American adventure film, starring Kirsten Dunst and Zachery Ty Bryan.
It tells the story of a brother and sister who survive a plane crash that strands them in the Canadian Wilderness. They are rescued by a local Native American who claims there are 'bad people' in the forest and tells them they must get away. This leads them on a trip through the wilderness away from poachers to find their parents.
In an astronomical error the Native American draws a star map with the end stars of the handle of the Big Dipper (he calls it the Big Bear) pointing to the North Star at the end of the handle of the Little Dipper (he calls it the Little Bear). In fact the stars on the far side of the bowl of the Big Dipper are the pointers to the North Star.