Ramage is hoping to enjoy a well-deserved leave when he instead receives new orders: commission and take command of the Dido, a massive 74-gun ship that carries enough weight of metal to destroy a frigate in a single broadside or sweep a ship's decks clear of men. Accompanied by the courageous crew of the Calypso, Ramage ventures to sea once again-bound for the West Indies, where he faces the challenge of commanding this massive weapon of war.