To avenge the death of her father, Jolanda, in the company of the black corsair's faithful companions, Van Stiller and Agonia, allies herself, in Tortuga, with the pirate Morgan, who, under the English banner, is fighting Spain.
At the time of the signing of the armistice, the treacherous Van Guld, with a ruse, manages to obtain from the English representative the consent to the arrest and trial of the pirates present in Maracaibo, including Morgan's son, Ralf, who has become in the meantime.
Introduced into the palace of the Medina, she manages to reach Consuelo of her who, deceived by her masculine appearance, she was madly in love with her since their first meeting, six months before her.
A sortie allows Van Stiller to join Henry Morgan who, due to the special merits obtained in the English crown, had escaped arrest and had been placed under surveillance on his ship.
The situation is reversed and, while in a last attempt to escape the Count of Medina finds himself adrift in a boat full of lepers, Yolanda and her family take possession of the treasure.