A law student becomes an outlaw French revolutionary when he decides to avenge the unjust killing of his friend. To get close to the aristocrat who has killed his friend, the student adopts the identity of Scaramouche the clown.

Army Lieutenant Halliday, accused of stealing the Army payroll, pursues the real thief on a frantic chase through Mexico aided by the thief's ex-girlfriend and is in turn being chased by his accuser, Capt. Blake.

China Valdes joins the Cuban underground after her brother is killed by the chief of the secret police, Ariete. She meets and falls in love with American expatriate Tony Fenner. Tony develops a plan to tunnel under the city's cemetery to a plot owned by a high official, assassinate him, and blow up the whole Cuban hierarchy at the ensuing state funeral. Together with a band of dedicated revolutionaries, they begin digging.

A young American has her ship torpedoed by a German U-boat but makes it back to her ancestral home in France, where she witnesses German brutality firsthand.