It's time for the annual Flying Rhino Junior High Games, in which students compete against one another in the glorious field of athletic competition. Everyone has been practising their skipping, pogoing and yo-yoing... well, almost everyone. Billy, a natural athlete, feels that he doesn't need to practise. Earl, irritated by Billy's arrogant posturing, strikes a blow for uncoordinated geeks everywhere by transforming the school into the site of the original Olympic Games: Olympus! Now Billy, Marcus, Lydia and Ruby must beat the ultimate competitors -- those overbearing Greek gods -- if they have any hope of saving their school. Fortunately for our heroes, guess who didn't come prepared?