A British officer helps a Spanish rebel and his band of guerrillas repair a cannon to use against Napoleon's forces. Historical drama, starring Cary Grant, Frank Sinatra, Sophia Loren, Theodore Bikel, John Wengraf and Jay Novello.

During the Napoleonic Wars, when the French have occupied Spain, some Spanish guerrilla soldiers are going to move a big cannon across Spain in order to help the British defeat the French. A British officer is there to accompany the Spanish and along the way, he falls in love with the leader's girl.