Duck, You Sucker! (, lit. "Duck Your Head", "Get Down"), also known as A Fistful of Dynamite and Once Upon a Time ... the Revolution, is a 1971 epic Zapata Western film directed and co-written by Sergio Leone and starring Rod Steiger, James Coburn, and Romolo Valli.

Plot

In revolution-torn 1913 Mexico, outlaw Juan Miranda leads a family of bandits, robs a coach of wealthy men, and rapes a female passenger who insulted him. Passing by on a motorcycle is John H. Mallory, an Irish Republican explosives expert, who works in Mexico as a silver prospector. Juan asks John (who initially states his name as "Seán") to help him rob the Mesa Verde National Bank. After John refuses, Juan frames him for the murder of his employer and several soldiers, making him a wanted criminal and offering to "protect" him in exchange for his help. John reluctantly agrees, but escapes on the way to Mesa Verde.