All the Wild Horses follows endurance horse riders from the United States, Canada, South Africa, Ireland, the United Kingdom and the Netherlands as they compete in the wild and untamed Mongol Derby horse race in Mongolia. This multi-horse, multi horse-station race across one thousand kilometres of Mongolian steppe is the longest and toughest horse race on Earth. The riders battle extreme weather conditions, swollen rivers and wild dogs, as they navigate through the vast Mongolian wilderness. They change their horses at every station, staying the nights out in the daunting, dangerous wild or with nomad families along the way. One wrong move and they could be bucked off and lose their horse with help being hours away. Serious injuries, broken bones and heat exhaustion are a common and debilitating factor in the race. All the Wild Horses throws up twists, turns and extreme drama as it builds to an unexpected, nail-biting but ultimately rewarding finish.