Plankton: The Movie

Plankton unsuccessfully attempts yet again to steal the Krabby Patty secret formula. When he returns home to the Chum Bucket, he is surprised that his computer wife Karen has turned the restaurant into a successful Mexican-themed chum restaurant with an active customer base. Frustrated that her move isn't evil to his exact specifications, he burns the place down. Fed up with Plankton never listening to her ideas, Karen removes her Empathy chip from her circuitry and takes on a larger mech form, and begins using magnets to build a giant floating fortress and take over the world.