spongebob and squidward work as employees at a restaurant called the krusty krab in the underwater town of bikini bottom. the krusty krab, which is run by a greedy red crab named mr. krabs, is famous for its krabby patty burgers. the recipe for krabby patties is top secret. the owners of a competing restaurant called the chum bucket, plankton and karen, often try to steal the recipe.