"Scaredy cats! There's a pet wash at Sleepy Hollow Elementary, and it isn't long before the classroom ghosts start causing trouble. Other kids can't see the ghosts, but the animals can --- and they're spooked! When the real pets escape, the ghost pets aren't far behind. It's up to Nina, Jeff, and Cassidy to track them down. Can they find the missing animals? Will the ghost pets be on the loose forever? Or will Nina and her friends wind up petrified.