After weeks at sea with nothing to show for it, the crew of the Crimson Sail is growing restless, and ready to mutiny. Only the promise of a treasure worth more than gold keep the pirates from making their own captain walk the plank, along with his beloved rats, Star and Skye.

But when a violent storm comes out of nowhere, delaying their journey to the island where the promised treasure can be found, and the treasure isn't what any of them expected, will Star and Skye's plan be enough to stop the pirates from leaving Captain Charlie marooned on the island? Or will their attempts to save him send them – along with the rest of the crew - to Davey Jones' locker?