A Black Merchant Marine in World War II forces the Navy to desegregate his ship, a teenage slave pressed into Royal Navy service finds himself in the thick of the Seven Years' War, and more.

Anti-war sentiment irrupting on the SS Columbia Eagle and racial unrest aboard the USS Kitty Hawk spark rebellions at sea during the Vietnam War; mutineers overthrow Captain Bligh on the HMS Bounty; and the revolt on the American slave ship Creole ends in triumph.