In 1818, Carlito, an eleven-year-old boy in the Spanish-owned town of Monterey, California, sees his quiet life threatened when the Argentinian privateer Hippolyte de Bouchard attacks with his pirate ships.
Following the Revolution, an eleven-year-old boy becomes the captive of a ruthless man who has set up his own "nation, " supported by piracy, on a remote part of the New Jersey coast.
When she inadvertantly frees four evil pirates from their magical entrapment, Boa, a young Australian girl, enlists her best friend's help to escape the pirates when they come looking for revenge.
Jolly, Griffin, and other brave warriors return to battle in one last attempt to save their world from the evil Maelstrom as, despite major setbacks, they finally realize that only courage, love, and loyalty will see them through.
Jolly and Munk start training with Forefather when they discover that their special abilities as "polliwogs" may be the only way to save the city Aelenium from the Maelstrom.
After finding buried treasure guarded by giant sand crabs, the crew of the Sea Rat comes down with a mysterious illness, leading the pirate students to believe that the treasure is cursed.