It's World Book Day and school is buzzing with excitement. But something smells funny... in every classroom, there's a teacher letting go of a long, loud, ground-shaking, ground-breaking fart. And when our hero spots a fellow pupil (dressed up almost too convincingly as an alien) hovering by the teachers' bums, and then discovers what looks like a spaceship powered by farts behind a hedge, he's on a mission to stop some unexpected visitors from kicking up a massive stink!