Mermaid Man and Barnacle Boy decide to go on vacation, but unfortunately they don't have anyone to look after the Merma-lair, so they ask SpongeBob and Patrick to look after it. However, they accidentally release Man Ray from a prison made of frozen tartar sauce.
Quest roles:
Ernest Borgnine(Mermaid Man (voice)), Tim Conway(Barnacle Boy (voice)), John Rhys-Davies(Man Ray (voice))