 After Graeme discovers that a recording of Max Bygraves singing "Tulips from Amsterdam" makes the goldfish lash about with anger, he experiments with the giant cod.The experiment works and the giant cod then accidentally swallows the gramophone and the record, which Graeme has thrown into the water.After arming the cod with an enormous set of false teeth, Graeme lets the cod escape from the fish farm, so that the cod can scare off the Eskimo fishermen, but the cod chases after Tim and Bill instead.