What if the asteroid that forever changed life on Earth missed and giant dinosaurs never became extinct? In this epic journey into the world of dinosaurs, an Apatosaurus named Arlo makes an unlikely human friend. While traveling through a harsh and mysterious landscape, Arlo learns the power of confronting his fears and discovers what he is truly capable of.

By 1876, most of the nation's American Indians had been forcibly relocated to reservation land. In the Dakota Territory, Red Cloud had settled his people on the great Sioux Reservation, becoming wards of the government. Other Sioux leaders saw this as defeat and continued to live in the traditional way, with legendary resistance. Then an economic depression struck, and gold was discovered in the Black Hills--on Sioux land. In this film, the lives...