Plankton creates a sauce that lowers the intelligence of whoever eats it. The fumes are sucked into an air vent, absorbed by a cloud, and rain on Bikini Bottom, turning everyone as stupid as Patrick. Sandy and Karen are the only ones not affected, and must re-educate the town.

Plankton disguises himself as SpongeBob’s grandmother.

To Love a Patty: SpongeBob has trouble saying Goodbye to the most perfect Krabby Patty he has ever cooked up. He falls in love with “Patty”, saves her from a muscle-bond customer, takes her home and out on a special date.

Hall Monitor: It’s time to pick this weeks Hall Monitor at Mrs. Puff’s Boating School and much to her dismay, it’s SpongeBob’s turn. The overzealous SpongeBob assumes the mantle of authority and extends it’s jurisdiction beyond the school yard to include the environs of all Bikini Bottom. SpongeBob unwittingly wreaks havoc on the unsuspecting citizenry. […]

King Neptune hosts a party, inviting all of the sea creatures. SpongeBob is jealous of the royal chef.

SpongeBob is instructed to clean up Mrs. Puff’s lighthouse, and finds a snail he names Louie. Louie attacks SpongeBob and sends the lighthouse rolling across town. When it comes to a stop, SpongeBob finds that Louie is a mother living in the lighthouse with her babies.