The incredible true story of Dion Leonard, an athlete who was befriended by a stray dog while running an ultramarathon through the Gobi Desert. Named for the desert in which he found her, Gobi became Dion's closest companion throughout the 80-mile race across China. The scrappy little pup ran mile after mile alongside Dion, through treacherous conditions and across raging rivers. He let her sleep in his tent and share his food, and eventually, his focus shifted from winning to the newfound friendship he and Gobi shared.