In the 1800s, after an assassination attempt by Prince Ramon against the king of Mandorra, a brigand resembling the king surreptitiously impersonates the incapacitated monarch in order to throw off the plotters.

Carlos Delargo, son of a royal princess of Mandorra who has been banished, is returned to the kingdom to face a murder charge, but is freed by King Lorenzo, to whom Dalargo bears a remarkable resemblance. When the king is wounded by assassins working for Napoleon, Delargo takes over the throne, at the request of Prime Minister Triano, in a plan to thwart the traitors. He also falls in love with the king's fiancée, Princess Teresa.—Les Adams <[email protected]>