The Abrafaxe: Under the Black Flag (2001)

Three boys visit a museum and discover a golden bowl - part of a legendary Aztec treasure. While looking at the treasure they set off the secret of time traveling before they know it they are aboard a pirate ship in the 18th century. They meet the beautiful female pirate Anne Bonnie, and the evil and ruthless pirate of the Caribbean, Capt. Blackbeard. They must help Anne Bonny, keep Tortuga free and from the clutches of Capt. Blackbeard, save the island, Bonnie, and find their way back home.