When SpongeBob and Patrick befriended a cement-covered Squidward who they name "Smelly," oblivious to his true identity, Patrick calls the S.W.A.T. team, who take the cement-covered Squidward to the zoo. Citizens who visit the zoo then mock him. SpongeBob, Patrick, and Squidward are able to escape through the zoo's sewage system.
SpongeBob is revealed to be good friends with many of the animals at the zoo. When he is banned from the zoo, he decides to create his own Bubble Zoo with Patrick. The "Species Unknown" habitat from "The Thing" makes its second appearance in the background.