Trixy, Tammy and Trig are three little girl pirates who live aboard the Lucky Lobster with their pets Mullet the dog, Kipper the cat and a seagull called Gulliver. Their friends include some boy pirates and a friendly sea-monster; and they can always rely on help from Mr Spoons at the Harbour Stores. The three little pirates have loads of adventures on the salty seas - but they're about to face their most dangerous mission of all! All the mermates are missing - even Princess Mo, and the king and queen are desperate for help. But dare the little pirates tangle with the wicked Vanilla Cringe and the scary octopus, Hong Kong?