122b - Single Cell Anniversary

Plankton walks to the Chum Bucket stinking with the stench of "failure" as he calls it, and Karen is in a very happy mood. Karen then smells Plankton and gives him a bath, taking off his skin, which is revealed to be his clothes. After he's washed, Plankton learns that it was his and Karen's wedding anniversary, and that Karen got him a copy of the Krabby Patty secret formula for his present, but he can't have it until he gets her a present.

Plankton is crying on the road and SpongeBob hears the crying sound. He sniffs like a dog and soon comes into Plankton. He tells SpongeBob the news and SpongeBob yells to all of Bikini Bottom that there's a "Love Emergency." SpongeBob then tells Plankton that his present has to come from the heart (which Plankton thought it's from the kidney), and he suggests a serenade. Plankton then remarks that he can't sing, and SpongeBob takes him to the pineapple and works on Plankton's vocal cords. Plankton sings so high that he breaks the glass Squidward was drinking out of his juice and Sandy's helmet breaks while she was walking then she runs back to her treedome for air. Then, Plankton goes off to serenade Karen.

Plankton walks into the Chum Bucket and starts singing a mariachi-style song, and SpongeBob and Patrick play guitars in the background, wearing Mexican-style clothing and mustaches. Plankton also shakes maracas. Karen cries when it is over, and then she starts uploading the Krabby Patty secret formula. SpongeBob is mad at this, so he unplugs what he thinks is Karen, but was just the coffee maker. Karen finally uploads the formula, but she starts crying again, and she breaks down and shorts out, leaving Plankton still without the secret formula. She then shuts down, and the E.M.I.L.P (Emergency Mother-In-Law Program) uploads and starts nagging, saying that Karen could have married the ATM, someone with money.