The episode begins with Frank the policeman showing a new cop around the prison. He then shows him the number one inmate, Plankton, who went to prison for stealing the Krabby Patty formula. However, due to the fact that his cell wasn't locked, he hid under Frank's mustache and escaped (the mustache becoming Plankton's hair). He returns to the Chum Bucket only for Karen to kick him out for unknown reasons and gave him his old guitar. Plankton then hears SpongeBob singing about the Krabby Patty while censoring out the ingredients with weird noises. Plankton asks him to sing it uncensored, however SpongeBob mistakes Plankton's appearance and wants him to join the band. Plankton rolls with it in hopes of stealing the formula. SpongeBob then runs into Patrick, who just found out where boogers came from. SpongeBob then decides to let Patrick join due to his ability to play his stomach like a drum. Squidward then began criticizing them due to their lack of musical talent. However, when asked to join, he accepts with the thought of becoming famous. SpongeBob, Patrick, and Plankton then start practicing while Squidward worked out to look good. SpongeBob told Patrick that he should dress with more pizzazz to look better for the band. Patrick then showed SpongeBob his ponytail that he grew naturally. He then did tricks with his hair, and grew more hair and sideburns. Plankton returned with band shirts naming their band "Plankton and the Patty Stealers." Despite this, they were still oblivious to Plankton's true intentions. Patrick asked for his in pink (to Plankton's dismay) and claimed it looked like a tattoo. They then started working on music. SpongeBob asked if the song could start off making a buzzing sound and end with a squeaking sound. Plankton agreed. Patrick kept the seats warm while Plankton took out his "recording equipment" and tried to record SpongeBob's Krabby Patty song, but he was unable to find it and his equipment overloaded when Patrick wore the headphones. Plankton broke down crying as his plan failed, but SpongeBob gave him hope as Mr. Krabs was letting them play at the Krusty Krab, after-hours. Meanwhile, now having achieved his "Perfect Dream Body," Squidward finally went to practice. A week later, they were on their way to the Krusty Krab when a cop showed up. Plankton told SpongeBob to hide him, saying that the cops were "autograph hounds." SpongeBob hid Plankton in his nose. The cop questioned where they were headed to and noticed a booger in SpongeBob's nose. However, he thought nothing of it and drove off. Plankton demanded that SpongeBob would never speak of it to anyone. They arrived at the Krusty Krab as Plankton unlocked the door.
Plankton immediately started searching for the formula. However, SpongeBob noticed this and soon realized that the band was another one of Plankton's dastardly schemes. The Cops then came and arrested Plankton. Now bald again, they gave him a new cell inside a safe. SpongeBob, Patrick and Squidward then visited him in prison, saying that their next performance would occur after his 22-year sentencing. The episode ends with them practicing and Plankton being tortured by it.
Shower In A Can!
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After SpongeBob sings his Krabby Patty Formula song, he tells Plankton that Mr. Krabs told SpongeBob that he had to censor the formula parts. One can infer that, at one point, he sang an uncensored version of this song.
Patrick played "William Tell Overture" on his belly. The instrument played is the timpani.
That scene is cut in the Bahasa Indonesia version for unknown reasons.
Squidward told SpongeBob and Patrick that they don't know anything about music, but SpongeBob was magnificent at singing and playing the electric guitar in the first movie when singing Goofy Goober Rock!. He also sings Sweet Victory in "Band Geeks." In two Season 8 episodes, SpongeBob is a talented ukulele player. This means that Squidward is jealous or temperamental.
Patrick has a natural talent to instantly grow hair in any style. This may be because in "Patrick SmartPants," he made a formula that did just that to him.
When SpongeBob said "Hey Plankton, can our first song be like this?" and he makes a deep alarm noise then a high-pitched screech has become an internet fad which a dreadful noise will replace the alarm noise and the high-pitched screech and it is called Hey Plankton.
SpongeBob plays bass guitar, it's a red version of the one Mrs. Puff played in "Band Geeks."
When the police fish sees part of Plankton's green body hiding in SpongeBob's nose and thinks it's a booger was briefly foreshadowed earlier in the episode when Patrick says "I found out where boogers come from."
This is the only episode where Mr. Krabs doesn't appear when Plankton tries to steal the Krabby Patty secret formula. However, he is mentioned by SpongeBob.
The Krabby Patty Formula is written in random letters.
The Krabby Patty secret formula is revealed to have "humorous censorship," to keep viewers from discovering the secret formula themselves.
The episode title is a reference to an album in an old SpongeBob SquarePants holiday short titled "Plankton's Holiday Hits." It was to promote a fake holiday album that Plankton made himself. At the beginning of it, an announcer said that on the albums Plankton made was called "Krabby Road."
In the German version of this episode, the episode is called "Krabby Patty Blues."
When Patrick plays "William Tell Overture" on his belly, several frames are missing in the loop.
When Squidward tries to lift the weight and injuries his arm, SpongeBob can hear him scream in pain over the phone. However, just before this, Squidward had hung up his phone, so SpongeBob shouldn't have been able to hear Squidward's scream.
The bonfire under Squidward's seat should've burned out, but it never did.
When Plankton was in SpongeBob's nose, he has a lighter shade of green than he usually has.
When Plankton unlocks the door to the Krusty Krab, the key is horizontal, but when the scene gets further away, the key is vertical.
Squidward is seen playing left-handed when the group is warming up in the Krusty Krab, but later is seen holding the guitar right-handed outside the restaurant. This error also happens in "Jellyfishing."
SpongeBob's pineapple front door is way bigger than it usually is.
When Plankton walks to SpongeBob, he appears to be half of his size, but later he's much smaller.