I Pirati della Costa plot
A traitor causes Captain Louis's Spanish warship to fall into the hands of pirates. The captain himself is held responsible for the treason and is sentenced to life in prison, but through mutiny he forces the ship of the convicts to sail to Tortuga. He becomes the bravest of all sailors and frees Isabelle, a Spanish governess, who has been kidnapped. By a high treason a war is about to break out against England. With a brave intervention, Louis once again saves the situation and his previous accusations are annulled. Isabelle falls in love with the loyal captain...