A new adventure story about the Pirate Gang - red-haired Thomas, the leader of the gang and the grandson of an old pirate, his clever neighbor Willie, Thomas's sister Fearless Marie and the pirate parrot Monsieur Moody. Young adventurers live in Pirate Bay near the very ocean, and Thomas's father built them a small galleon with a large sail, on which they fearlessly travel to neighboring islands. Once a ship called "Rapid" sailed to Pirate Bay, the crew of which looked more like sea robbers than ordinary sailors, and their captain could scare even an adult. However, the young pirates are not afraid of anything and fearlessly fight the thieves of Queen Hilda's diamond.
