Confederate Major Sanders (Jacques Sernas), continues fighting the North after the conclusion of the American Civil War. Former Rebel Gary Diamond (Giuliano Gemma), now a guide, leads a pair of Union soldiers to obstruct Sanders before he can pull off a raid on Fort Yuma. However the others are unaware that Diamond knows that one of the Union officers is actually Sanders' spy. More complications ensue, pairing Diamond with the aptly named saloon-girl Connie Breastful (Sophie Daumier). Later Diamond is found to be a traitor and is tortured severely before Sanders' plot is foiled.