Everyone knows this: You're sitting in school, flicking back the paper balls that were thrown at you, watching what the teacher writes on the board - and suddenly, a checkered pair of underwear sails down from the ceiling and lands softly on the teacher's desk. Never experienced that? Well, that's exactly what happens to Robert! Who could have guessed that the latest invention of his best friend Pelle would have such consequences? It was supposed to bring order...