Pink Panther's scooter breaks down, so he tries to repair it. He finds a couple of gremlin-like creatures in the engine and tries to remove them. Eventually they leave, only to learn that they get bigger when they're in contact with water. They run wild in the city, eating all sorts of metal in their path, and get even larger when Big Nose tries to spray them with a fire hydrant. Afterward, they're big enough to begin eating the entire city, but Pinky has the solution to get them back down to size by using a hair drier to shrink them down.