Janine summons the Ghostbusters to inform them that they are in debt due to a variety of causes, one of which being food expenses, which causes Peter to snap at Slimer for eating a lot and giving nothing in return. Slimer counters that what he gives is "love", but Peter tells him to shrink himself, and when he does, he tries mailing him away. Ray stops him, then Slimer goes out to get a job.
Out in the streets, a teenage boy is bullied by a group of other teens, who trip him and make him drop his stack of comics and magazines. Then, when the bullies leave, a Doberman chases him, and he screams. Slimer hears the boy screaming and saves him, so the boy thanks Slimer and introduces himself as Mike. He then pays Slimer to be his bodyguard, but Slimer doesn't know how to appear scary, so Mike takes him home to teach him how.
Meanwhile, Janine and Ray are searching for Slimer, and the bullies are hanging out near a pharmacy. Slimer and Mike arrive, and when the bullies insult Mike, Slimer chases them. Slimer and Mike leave, and the bullies decide to seek revenge. Meanwhile, the Ghostbusters (except Peter) and Janine are worried about Slimer, and they get an envelope full of slime-covered money. Ray decides they should search for Slimer at the zip code of the post office.
The bullies enter a subway station, where Rick (the leader) reveals that it was closed years ago due to strange creatures there. They meet up with the creatures, and Rick invites them up to the surface to get revenge on Slimer and Mike. The Ghostbusters, still looking for Slimer, notice the higher PKE readings.
One of the bullies then invites Mike into the warehouse, and he hesitantly accepts, but then the plan backfires when the creatures start attacking, not only Mike, but the bullies as well. Slimer flies out and alerts the Ghostbusters to the creatures, who are revealed to be called "Barrow Wights"; malevolent creatures that, like vampires, must be invited to go to a place. Slimer makes part of his body into a baseball bat and beats up the Barrow Wights, while the Ghostbusters trap them, then the bullies call a truce with Mike. Ray says that Slimer is worth his weight in gold, but Peter disagrees, angering Slimer.
This episode provides examples of
- 13 Is Unlucky: The subway station the Barrow Wights live in is number 13.
- Always Chaotic Evil: Barrow Wights are described as universally evil.
- Aside Glance: Ray shrugs at the camera when Slimer leaves.
- Batter Up!: Slimer beats the Barrow Wights with a baseball bat made out of part of his body.
- Beware of Vicious Dog: A Doberman growls at, and chases, Mike.
- Bookworm: Mike has many stacks of books in his room.
- Broke Episode: Downplayed — what kickstarts the plot is the Ghostbusters being in debt, but it's not given much focus.
- The Bully: The main human antagonists are a group of rude teenagers who insult Mike and shove him.
- Catchphrase Insult: Rick calls Mike a "mouse" several times.
- A Day in the Limelight: Most of the focus is on Slimer.
- Dog Stereotype: The dog who chases Mike is an aggressive Doberman.
- Ectoplasm: Exploited when the Ghostbusters receive a letter with slime-covered money and take it as a clue to Slimer's whereabouts.
- Evil Is Not a Toy: The bullies try to counter Mike's new slimy buddy with some supernatural menaces of their own. What they find are Barrow Wights, who gladly turn on the kids once invited to the surface.
- Evil Laugh: The Barrow Wights chuckle maniacally on occasion.
- Evil Redhead: Two of the bullies, plus one of the Barrow Wights, have red hair.
- Extra Eyes: Some of the characters in Mike's magazines are monsters with several eyes.
- From Bad to Worse: Mike is first bullied, then chased by an aggressive dog.
- Heel–Face Turn: The bullies decide to stop bullying Mike after their experience with the Barrow Wights.
- Horrifying the Horror: Lampshaded by Mike, who notes that it's strange for human bullies to scare a ghost.
- The Hyena: The Barrow Wights burst into evil laughter quite a lot.
- Instantly Proven Wrong: Mike says, after being bullied, that things can't get worse, but then the angry dog shows up.
- It Amused Me: Until Rick swears revenge on Mike for calling the group "creeps", the only reason the bullies bullied Mike was because it was funny to them.
- Last-Second Joke Problem: At the end, the Ghostbusters are no longer broke thanks to Slimer's payment, the bullies have called a truce, and the Barrow Wights are trapped. However, Slimer is angrily chasing Peter, having gotten offended at Peter's comment.
- Mass "Oh, Crap!": Upon first seeing the Barrow Wights, and then again when they turn aggressive, the teens (and in the second case, Slimer) immediately get scared expressions.
- Must Be Invited: Ray says that, like vampires, the Barrow Wights can't actually come to the surface, unless someone invites them. Unfortunately, Rick did just that.
- Mythology Gag: Ray calls Slimer a "little spud", referencing the original movie, where he called him an "ugly little spud".
- Nerd Glasses: Mike is a bookish, unpopular boy who wears glasses.
- Nice Kitty...: Mike apprehensively calls the Doberman a "nice doggy" in a failed attempt to get it not to chase him.
- No Full Name Given: We don't know Mike or Rick's surnames.
- No Name Given: Out of all the seven bullies, Rick is the only one named.
- Oh, Crap!: Mike gapes, upon seeing he's surrounded by Barrow Wights.
- Platonic Declaration of Love: Ray says that Slimer's contribution is "love".
- Platonic Kissing: Slimer tries to butter Peter up by kissing his hand.
- Quaking with Fear: The bullies shake fearfully upon meeting the Barrow Wights.
- Red Is Violent: Rick, the leader of the bullies and the only one who does anything physical, wears a red T-shirt.
- Revenge: The bullies' reason for inviting the Barrow Wights to the surface was to get back at Mike for calling them creeps.
- Shout-Out:
- The title parodies They Call Me MISTER Tibbs!.
- Ray mentions having grown up watching Lassie movies.
- Sizeshifter: Exploited when Peter uses Slimer's ability to shrink himself in his attempt to mail him.
- Taught by Television: Ray learnt how to interpret cues from pets from watching Lassie.
- Theme Music Power-Up: The theme tune plays as the Barrow Wights are being attacked.
- Tongue-Out Insult: Before getting the baseball bat, Slimer sticks his tongue out at the bullies.
- Unwitting Pawn: In the warehouse, the lead Barrow Wight mocks Rick for being this, saying he was their means to finally reach the surface.
- Villain Ball: The bullies, chiefly Rick, decide to stir up the Barrow Wights just for the purposes of getting petty revenge on Mike and Slimer. It backfires on them big time.
- Writers Cannot Do Math: Mike claims there are six bullies, but there are actually seven.
