Watching their favorite show, reruns of the TV duo superhero show Mermaidman and Barnacleboy, SpongeBob and Patrick hear that their beloved heroes are living in a nearby retirement home. The aging superheroes discover their toughest challenge yet will be SpongeBob and Patrick, who have decided the duo must come out of retirement. SpongeBob loses his self-confidence when an arrogant customer wrongfully claims SpongeBob forgot to put pickles on his Krabby Patty. With his perfect record now ruined, SpongeBob quits his job as he begins doubting his ability to do even the simplest task. Without SpongeBob, the restaurant fails to attract customers. When SpongeBob learns the Krusty Krab is in dire straits, he returns from the skids to save the Krusty Krab in an ultimate show down with the arrogant customer.