Sixteen mustangs, four men, one dream: to ride border to border, Mexico to Canada, up the spine of the American West. The documentary tracks four fresh-out-of-college buddies as they take on wild mustangs to be their trusted mounts, and set out on the adventure of a lifetime. Their wildness of spirit, in both man and horse, is quickly dwarfed by the wilderness they must navigate: a 3000-mile gauntlet that is equally indescribable and unforgiving.金勇在第(dì )一次看见对方时，就怀疑(⌚)对(duì )方也属于人类，毕竟对方的体型跟他一模一样，除了后面没(méi )有翅膀之外，其他的一(yī )切都跟(📡)同一个种族一样。