The Ghostbusters are on live TV, hosting a show about Al Capone's tomb as part of Peter's latest money-grubbing plan. He and Egon are talking (with the latter feeling awkward as he's bad at lying, though Peter tries to claim he's nervous about being on TV) while Ray and Winston are in Ecto-2. Peter makes up a fake legend about Al Capone coming back as a ghost at midnight every ten years, then plays a history of Capone. Then, Peter interviews Janine, Louis, and Slimer, but Egon gets a PKE reading.
Just then, the real ghost of Al Capone arrives and tells the Ghostbusters to stop talking about him. As midnight strikes, Louis pretends to be the ghost, while Peter teases the real ghost. Then, the Capone ghost teleports the Ghostbusters and Slimer away. When a car drives past and fires ectoplasmic bullets, Egon realises that they're in the spirit dimension.
Then, a ghost exits the car and takes them to see "the boss" (the Capone ghost). At the house, Capone arrives, weilding a strange, baseball-bat-esque weapon, and declares he was offended by Peter's speech. The Ghostbusters try to fire at Capone, but the proton packs don't work in the spirit world. Some other ghosts enter and get into a fight with Capone, so the Ghostbusters and Slimer run out of the building.
Another ghost drives them all to some more ghosts, who are working for Capone but want him gone so they can be legal businessmen. They offer to bring the Ghostbusters and Slimer back if they can get rid of Capone, so the Ghostbusters agree to the deal, pretending Slimer is their boss. They ask for help making their technology work, so the leader of the ghost group gives Egon "magic" crystals.
Ray and Winston repair Ecto-2, when a female ghost flirts with Ray. Then, it turns out she already has a boyfriend, who's Capone's lackey Manny. He chases Ray and Winston, but luckily Egon and Peter trap him. Then, the Ghostbusters and the rebelling ghosts attack Capone, who angrily grows to a giant. Winston determines that Capone can be trapped if they destroy the bat, so he ejects Ray and flies into the bat with his proton pack set on self-destruct, escaping at the last moment. When the bat explodes, Peter, Ray, and Egon trap Capone, and the leader of the defector ghosts teleports everyone back.
Back in the normal dimension, no one believes the Ghostbusters' story, but they think that they did a good "show" by disappearing. Then, they reveal that Peter agreed to do a second special the next day, causing the rest of the Ghostbusters to chase him angrily.
This episode provides examples of
- Accidental Truth: Peter was intending to lie about Capone coming back as a ghost for publicity, but then he makes an actual appearance.
- Arbitrary Skepticism:
- Egon doesn't believe the ghost leader's claim that the crystals are magic, despite being in a ghost dimension that breaks the laws of physics.
- The others don't believe the Ghostbusters went to the spirit world, despite Slimer being clearly visible and a ghost.
- Artistic License – History: Al Capone was a real person, but contrary to what Peter said in the episode, he was not an only child (he had brothers) nor did he have any reservations about hurting women (it was only certain women he didn't hurt).
- Bad Liar: Egon acts nervous and stilted when having to lie about Al Capone returning.
- Bannister Slide: During one fight scene, Egon and Peter slide down a bannister on the outside of a building.
- Bullying a Dragon: Peter insults Capone, leading to Capone teleporting him, the other Ghostbusters, and Slimer to the spirit world (though he was planning on doing that anyway).
- Covered in Gunge: Slimer lands on Peter's head, covering him in slime.
- Cyclops: One of the ghosts has one eye.
- Delirious Misidentification: While semiconscious from a crash, Peter mistakes Egon for his father.
- Did You Just Flip Off Cthulhu?:
- Peter says, "Eat protons!" to the ghost in the car.
- When taking out Capone, he says, "Where you come from you may be big and tough, but here you're just small change."
- Drives Like Crazy: The ghost who drives the Ghostbusters and Slimer to Capone drives very erratically, at one point even levitating his car.
- Ectoplasm:
- Slimer slimes Peter at one point.
- One of the first signs the Ghostbusters and Slimer have landed in the spirit dimension is ectoplasm on the floor.
- Eldritch Location: Ray notes that the laws of physics don't apply in the ghost dimension.
- Evil Laugh: Capone laughs evilly around the time he meets the Ghostbusters.
- Extra Eyes: One of Capone's lackeys has three eyes.
- Flashy Teleportation: Whenever someone teleports, there's a flash of white light.
- Last-Second Joke Problem: The episode ends Ray, Egon, and Winston angrily chasing Peter after finding out he planned for them to do a second special.
- Mythology Gag: Slimer's codename is The Spud, referencing Ray calling him a spud in the movie.
- Non Sequitur, *Thud*: After Peter crashes, he asks his father to borrow something before passing out.
- Not So Stoic: Egon appears visibly nervous when he gets Capone's PKE signal.
- Oh, Crap!: Ray looks nervous when he realises the proton packs don't work in the spirit world.
- One-Liner: When Egon notes that the ghosts are shooting at each other despite it not hurting them because they were gangsters in life, Winston says, "I've heard of being in a rut, but this is something else!".
- Red Eyes, Take Warning: Both Capone and one minor evil ghost are shown with red eyes.
- Say My Name:
- Ray, Egon, and Winston yell, "Peter!" when he gets them into trouble teasing Capone.
- At the end, someone in the crowd yells, "Peter!" again due to being angry with him for planning a second special.
- Sizeshifter: Al Capone voluntarily grows to a giant towards the end.
- Speak in Unison:
- Janine and Louis say, "Hi" in unison when being interviewed.
- Egon, Ray, and Winston say, "Peter!" in unison when berating him about teasing Capone.
- Spell My Name with a "The": Slimer's "gangster name" is The Spud.
- Theme Music Power-Up: The main theme plays during the final fight.
- [Verb] This!: When Capone says that the Ghostbusters are "on [his] turf", Peter replies, "Yeah? Well, turf this!".
- Wouldn't Hit a Girl: Peter claims that in life, Capone never hurt women.
