Europe, circa 18,000 BC: On a buffalo hunt with his tribe, young chieftain's son Keda (Kodi Smit-McPhee) was left for dead after a fateful cliff plunge. Having survived the fall-as well as a subsequent attack from a wolfpack-he makes the choice to nurse the alpha he wounded in battle... and the two find themselves forging an unlikely partnership and bond as Keda struggles homeward.