Mermaid Man drops his belt and SpongeBob finds it and tries to return it. But then a little mishap happens. He has shrunken all of Bikini Bottom, including Mermaid Man and Barnacle Boy. And then he shrinks himself and shrinks Bikini Bottom, and then Plankton comes back and is bigger than everybody.
Mrs. Puff is driving with SpongeBob once again. SpongeBob slams into a shipment of juice to the senior home. The cops arrest Mrs. Puff, thinking she did it. After this, Patrick and SpongeBob go to great lengths to try to break her out of jail.