With the intervention of Napoleon III of France, Archduque Maximilian was installed as emperor in Mexico but Mexican countrymen known as Juaristas (Juarez' resistance) were fighting to demonstrate that their country could act independently, that - as the reform contended - all men were equal under law, and that foreign monarchical adventures in Mexico were futile...
Sister Sara (Shirley MacLaine), presumably a nun, has adopted their cause and is being pursued by the French army for raising money to the Juaristas... Hogan (Clint Eastwood) is a wonder obliged to neither party... He appears unexpectedly when Sister Sara is about to be raped by three men... Fortunately for her, he kills them all...
But unlike the 'Man With No Name,' Eastwood doesn't turn and ride away... He escorts the good-looking nun in her mission...
But the nun's strange behavior intrigues his curiosity... She smokes cigars, she drinks whiskey and her language comes to be every day more profane...
Hogan's fascination with her arrives at its peak when she removes an Indian arrow from his shoulder, having rendering him half insensible by intoxicating him with shots of Whiskey...
After joining her to blow up a French supply train, he is persuaded to help a group of Juaristas led by Colonel Beltran (Manolo Fabregas) in a final attack on a French garrison...
The climax of "Two Mules for Sister Sara" displays the differences between Leone's conclusion which the 'Stranger' merely disappears into the mists of time... The change of image didn't excite the audience leaving the picture with enough nostalgia for the myth of the loner, the super hero, the 'Man With No Name.'
The film (beautifully shot in Color) is really a two-character story... The interesting team gives amusing and tender performances... The motion picture echoes "The African Queen," but is far away from being Hepburn/Bogart exciting adventure...
