Morton, le responsable du chemin de fer doit s'approprier un point d'eau afin de ravitailler ses locomotives sur une nouvelle ligne. Pour cela, il fait assassiner sans scrupules le propriétaire par Frank, un tueur à gages, puis il tente de séduire sa veuve. Mais bientot arrive en ville un homme à la recherche de Frank pour le meurtre de son frère...
Clint Eastwood (the Man with No Name) is good, Lee Van Cleef (Angel Eyes Sentenza) is bad, and Eli Wallach (Tuco Benedito Pacifico Juan Maria Ramirez) is ugly in the final chapter of Sergio Leone's trilogy of spaghetti westerns (the first two were A Fistful of Dollars and For a Few Dollars More). In this sweeping film, the characters form treacherous alliances in a ruthless quest for Confederate gold. Leone is sometimes underrated as a director, but the excellent resolution on this digital video disc should enhance appreciation of his considerable photographic talent and gorgeous widescreen compositions. Ennio Morricone's jokey score is justifiably famous. The digital video disc includes about a quarter-hour of footage not seen in the original release.