In a seaside village, young Jack discovers a mysterious map in his attic and shares it with his best friend, Emma. They set sail, guided by Jack's father's advice, and reach a distant island. There, they navigate through jungles and caves with the help of friendly animals.

In an ancient treasure chamber, they meet the fearsome pirate Captain Redbeard. To earn the treasure, they complete his challenges, including crossing a rickety bridge. Impressed by their bravery, Captain Redbeard reveals the true treasure: ancient books and maps filled with sea secrets and adventure stories. Jack and Emma return home as heroes, their boat laden with knowledge.