When five adventurous children—Milo, Tessa, Marco, Evie, and Ollie—discover an ancient pirate ship washed ashore, they stumble upon a mystery that has haunted the sea for centuries. With a fragment of a treasure map and a strange compass, they embark on a high-stakes journey to uncover the secrets of Captain Redbeard's lost fortune. But they're not the only ones searching for the treasure. As rival pirates close in, the children must solve cryptic puzzles, navigate dangerous traps, and confront legendary ghosts in a race against time to claim the treasure before it falls into the wrong hands.