184a - Jailbreak!
The episode opens with the Narrator explaining the Bikini Bottom Jail, mainly it's newest member, Plankton. The warden lets all of the prisoners out, including Plankton. Plankton hears SpongeBob calling out to him. Plankton wants to know what is SpongeBob doing there and SpongeBob says that Mr. Krabs told him to watch over Plankton. Plankton doesn't like the idea but the prison warden tells him to quiet down. The scene changes over to a room where Karen is about to send over a cake to SpongeBob which is for Plankton. Plankton asks if Karen had put the file in the cake but Karen just laughs for she thought he was joking (although plankton was expecting her to put a file in the cake). Plankton attempts to jump over the glass but SpongeBob grabs him.
In the cafeteria, Plankton attempts to eat his food but a purple cellmate eats some of his food. Another green cellmate drinks Plankton's milk and then Plankton gets eaten by a Light Blue Cellmate. Plankton yells out that he is the most evil genius and yells out his name. The Purple Cellmate, thinking the Light Blue Cellmate is talking, doesn't believe him, saying he and the others are fans of Plankton. Plankton calls out his name again and then the Purple Cellmate punches the Light Blue Cellmate in the stomach which causes Plankton to be punched out and crash into the wall. The Purple and Green Cellmates start to beat up the Light Blue Cellmate until Plankton breaks it up. Plankton introduces himself to the Cellmates and the Cellmates say how they are going to do everything that Plankton says. Plankton gets excited saying how easily he could get the Krabby Patty Secret Formula.
Outside, Plankton is explaining to his Cellmates how to escape from the Bikini Bottom Jail. The Cellmates have ideas but Plankton tells them they need better ones. The Whale Cellmate says they could break out only if they had chum and the other Cellmates agree. Plankton is surprised with the Cellmates saying how chum is great for committing crimes. Plankton asks if chum is great for eating but the Cellmates don't think so. Plankton then agrees to make chum for the Cellmates and they all cheer. Inside Plankton's jail cell, Plankton and his Cellmates are creating chum using different kinds of items. They successfully make the chum. SpongeBob overhears them and runs to the Krusty Krab to warn Mr. Krabs. At the Krusty Krab, SpongeBob tells Mr. Krabs that Plankton is planning to break into the Krusty Krab with his Cellmates. Mr. Krabs insures SpongeBob that he will handle the problem.
Back at Bikini Bottom Jail, a Prison Warden is talking to two of Plankton's Cellmates saying why they are out of their cells. The Purple Cellmate says that the Green Cellmate said the napkin smells like kelp berries. The Prison Warden smells the napkin and falls down, unconscious. The Purple and Green Cellmates bring the Prison Warden inside while Plankton arms himself with chum and a bomb. The Whale Cellmate then launches Plankton to the other side of the prison and Plankton plants the bomb on the wall. Plankton gets spotted but the bomb goes off and blows a giant hole in the wall. However, the Prison Wardens then start filling up the wall, making it impossible for Plankton to get though. However, they get stuck and Plankton uses the opportunity to lead all of his Cellmates out through the front door. At the Krusty Krab, SpongeBob notices Plankton and all of his Cellmates preparing to invade the Krusty Krab. Mr. Krabs says that they are ready for them while Plankton yells out to his Cellmates to bring him the formula. Plankton's Cellmates begin breaking down the door using the Whale Cellmate as a battering ram and they successfully break in. The Whale Prisoner then opens the safe with Mr. Krabs urging Plankton not to get it but Plankton doesn't listen. As Plankton heads toward the "formula," the curtain rises and the entire Bikini Bottom Police Force emerge from it. Mr. Krabs revealed that he knew of Plankton's attempted break in and had enough time to hide the entire Police Force in his safe. The Police Force then take Plankton and the rest of his Cellmates back to jail. SpongeBob congratulates Mr. Krabs on how he always wins, but then the entire Krusty Krab falls apart. The episode ends when Mr. Krabs replies " Yep, I'm a winner."