Map to everywhere

The Map to Everywhere is highly sought for obvious reasons. Master thief Fin wants it so he can find his mother. Suburban schoolgirl Marrill needs it to get back to her world after becoming trapped in the Pirate Stream. Marrill and Fin band together to find the map before the evil captain of a ghost ship can get it first.

"Marrill and Fin continue their adventures as they race to stop the destruction of the Pirate Stream by a frightening ancient power whose coming was prophesized in The Map to Everywhere"--