It's time for Moorepark Middle School's annual Demonstration Derby, and Billy Broccoli thinks he's got it made. All he needs is a little help from his best friend Hoover Porterhouse--the ghost with the most! With the Hoove by his side, Billy's got this one in the bag. Who wouldn't vote for a presentation on mind reading?

But when Billy lands a spot on the seventh grade derby team, he starts spending more time with his new teammates than he does with Hoover. And the Hoove plays second fiddle to no one! If Billy's not careful, his secret weapon might just vanish into thin air, leaving Billy to pick up the pieces of a derby day disaster!