SpongeBob Squarepants: Mermaid Man, Barnacle Boy/Doing Time

Series 1, episode 0

Watching their favourite show, reruns of the TV duo superhero show Mermaid Man and Barnacle Boy, SpongeBob and Patrick hear that their beloved heroes are living in a nearby retirement home. The ageing superheroes discover their toughest challenge yet will be SpongeBob and Patrick, who have decided the duo must come out of retirement.