The triumphant final ride of the Lone Star legend! Jessie and Ki are on a train to Laredo with Jessie's new thoroughbred, Lucifer, when the train is ambushed. Ki is wounded and left for dead. Jessie and Lucifer are taken to a hacienda at the foot of El Monte del Fuego, a living volcano. As the volcano begins to rumble, Jessie realizes that she must save herself and Lucifer from the men who will do anything to have her horse.