Alexia and her brother, Brad, travel to the Snowy Mountains, where they rescue a starving brumby whom they name Prince of the Brumbies. When Alexia wants to enter in the annual Stockman's Bush Race over the old gold fields, her hopes are dashed when her chosen ride, the retired race horse Stormy, proves too big and naughty for her. Alexia and her best friend Enya work hard to try and prepare the bush brumby Prince in time for the contest.