Rotten and Rascal are quarrelling twin baby pterosaurs, who yell, shout, screech, howl, scream and snarl at each other all day long. One day a terrible argument begins and one by one the other dinosaurs try to resolve their noisy dispute. But the two terrible pterosaur twins prove impossible to shut up. Until, that is, the terrifying Tyrannosaurus Rex steps in and finally silences the horrible hullabaloo.