Watch Yakari: A Spectacular Journey Full Movie Free Online 123Movies. With his tribe's move to follow the migrating bison, Yakari, the little Sioux boy, sets out on his own to follow the trail of Little Thunder, a wild mustang said to be untameable. Travelling far from home and deep into the territory of the terrible cougarskins, Yakari and Little Thunder undertake a great adventure and find their way back home.