Belle-on-Sea is getting ready for the Night of the Hungry Ghosts, the most frightfully fun time of the year. Mr. Vanderpuff's bake will be the centerpiece of the whole parade, but he needs a new creation and he's totally stumped. To make matters worse, salty old seadog Captain Lufty and his Hat Rat, Barry, have warned that something is coming to Belle-on-Sea. Something terrible...

After a ghost train is seen rattling into town, people start to go missing--first the librarian, then the mayor. Bridget and Tom begin tracking the train's tracks, delighted to be in the thick of another mystery.

Then the unthinkable happens: the ghost train takes Mr. Vanderpuff! Someone--or something--is out to destroy Belle-on-Sea. But they've forgotten one important detail... This is Bridget's town.