Francis Morgan is a son of wealthy New York industrialist caught up in his father's business. One day he finds out that he is a descendant of the notorious pirate Henry Morgan who left a rich heritage behind him, that no-one ever found. Eager to locate the treasure of his ancestor, Francis takes a trip to Central America, and on the way he meets his distant cousin, also Henry Morgan. Together, they will find dangerous adventures, unknown lands, and love. A real Indiana Jones years before his time.