At the Chum Bucket, Plankton is introducing a new chum sauce, which melts through the pan and later through the floor. Just then, the alarm sounds, informing Plankton about a customer. Plankton goes to receive the order, only to find that he wanted a Krusty Krab product, so Plankton tells him to get those foods and beverages at the Krusty Krab. As he complains over how the people won't buy his food, he feels that Karen wasn't a good employee to him. Then, he threatens to replace his wife with much cooler machines, all three which fails to operate steadily. One of those machines is a toaster with arms and legs, which explodes, but survives. Another which is made of mostly liquid, but popped open and lost its liquid and also survived. The last being a windmill with a hairdryer on its back. Soon, the new inventions were acting aggressive toward each other. Plankton stated that he has had enough of Karen. Karen left a note saying that she's tired of being blamed for his failures. Later, Plankton sics his machines on the Krusty Krab, but it fails. He sees Karen, who has come back to get her things. He apologizes to her and she accepts his apology. They go back to the Chum Bucket together.
I can turn into a skyscraper!
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It is unknown how the liquid robot rebuilds itself.
This is one of few episodes where Plankton takes the role of a "protagonistic villain."
SpongeBob does not appear until the last 5 minutes of the episode, making him a minor character in this episode.
The Chum Bucket has a drive-thru in this episode.
Running Gag: Plankton forgetting to blink.
The Bikini Bottom News said that Plankton's invention was attacking the city, yet he only walked across the street to the Krusty Krab and didn't go into the city at all.
This episode aired as part of the "Bob Squad" marathon.
When SpongeBob says "We're all doomed! We're all doomed! Doomed-de-doomed-de-doomed-de-doomed-de-doomed!" it could be a reference to the show Invader Zim, a Nicktoons show.
Plankton's outfit is a reference to Adolf Hitler.
It is almost impossible that Karen and Plankton's wedding photo was in color.
The only ways this is possible is if they color enhanced it or they got a color photographer (which would have been really expensive because it wasn't a common thing at the time of their wedding, which would have been at least 20 years from when this episode aired)
The letter from Karen says microorganism, but Plankton reads it as "single-cell organism."
In Indonesia, after Plankton says "I've got a customer to attend to!", the Krabby things is skipped to "Honestly, I don't think anyone in Bikini Bottom would know a decent meal if it looked them right in the eye and said, "Hello! I'm a decent meal, wonderful to meet you! Please pay money for me and then put me in your mouth so your old pal Plankton doesn't lose everything he's spent his entire life working for!!!"