Sergeant Sádipo was born with a condition that prevents him from experiencing humor or silliness. Because he cannot understand it, he has decided to eliminate it — building a machine capable of stripping humor from people and replacing them with grumpy, joy-free versions of themselves. The world is getting duller by the day as his plan advances and people begin turning into buns and bologna. Against him stands Zueirama, a team of comic characters assembled specifically for this purpose. Their champion is Zoinho — a lazy motorcycle courier and the world's most committed troll — whose entire being runs on fun. The question is whether that fun is enough.