Intrepid travelers Fin and Marrill have shared countless thrilling and treacherous adventures on the magical waters of the Pirate Stream. But neither could have expected that their final adventure would force them to team up with their oldest enemy: the evil wizard Serth With the fate of the Stream and all their friends hanging in the balance, can they challenge the most frightening power they've ever come up against? Find out in this mind-blowing conclusion to the Map to Everywhere series