Shergar (1999)

When a young stable boy runs away from reform school, he befriends another fugitive, Shergar, a champion racehorse kidnapped by the Irish Republican Army for ransom but now on the loose. Can the lad elude the abductors and rescue the horse? Based loosely on the unsolved real-life kidnapping of Ireland's most decorated thoroughbred, this adventure drama stars Mickey Rourke, Tom Walsh, David Warner and Ian Holm.