 When Plankton discovers that his computer wife isn t the woman for him, he tries to find another woman. He finds Momma Krabs and dates her and has a secret scheme planned if they marry each other/When SpongeBob and Patrick find out that there is going to be a Mermaid Man and Barnacle Boy movie coming out, they get excited. But instead of the real MM and BB, they use actors. So SpongeBob and the rest of the gang decide to make their own movie with the real MM and BB.