An aide-de-camp in the Southern Army, Lloyd, has taken possession of a shipment of gold that General Sibley intended to use to buy guns and ammunition. With his cronies, Lloyd flees to the Mexican border. Sibley designates three condemned men - gentleman crook Chattanooga Jim, preacher Tim Dooley, and horse thief Fidel Ramírez - who can buy their lives by capturing Lloyd and recovering the gold. The task of the three soldiers is complicated by the intervention of Mexican bandits around their leader El Primero, into whose hands the precious cargo falls.
Second genre contribution of the relatively unknown director Nando Cicero in this Balcazar production, in which the Catalan family also provided part of the script of the film.
A BUTTER FOR THREE CANONS does not join the new current that approached comedy a few years later, nor does it join the ranks of the first spaghetti with more somber confrontations and revenge as the main plot. The film is closer to adventure/action cinema, but without neglecting the many deaths during the frequent shootouts. With a simple but tricky script, a mostly quite accomplished cast and a director who, although he doesn't get everything out of the film, this Italo-Western certainly meets fans' expectations.