Atom Ant is called by the police chief who informs him that someone stole the police station. Atom Ant flies into action and spots city hall being taken away by a large helicopter with a big magnet on it. Atom Ant grabs city hall and sees that the culprit is The Toadstool. Toadstool hits Atom Ant with a poison ray and knocks Atom Ant to Earth. Atom Ant recovers and flies back up.
After a short battle, Toadstool decides that he doesn't want a city hall and cuts it loose with Atom Ant stuck to the building. Atom Ant frees himself and saves city hall from crashing to Earth. He then flies up and gets the police station and drops it on Toadstool and his helicopter. Toadstool's crime wave is stopped and he is put in jail.