Janine takes the day off to take Egon to visit her family, only for them to be called back to headquarters after Slimer inadvertently activates a dimensional gate machine created by Egon, which allows a group of miniature demons to pass into the real world. Things take a turn for the worst when the demons combine to make one giant demon and it runs amok throughout New York. Meanwhile, Janine and Louise (Janine's temporary cover), along with Slimer, are left at HQ to battle against a trio of spirits who have passed through the dimensional gate after Louise activates ...
An experiment with Slimer goes horribly wrong when he starts breaking up and multiplying into hundreds of smaller Slimers, and the Ghostbusters have to catch all the pieces and put them together before Slimer splits into non-existence.
The Ghostbusters investigate several supernatural incidents which lead to them visiting a woman whose home is at the centre of where the events took place. They discover that she is linked to the events and that her ex-boyfriend, named Jeremy, has warned her of his prediction of the events and his intention to bring about the end of the world through what is known as Ragnarok. Meanwhile, Jeremy is possessed by a demon after initiating the beginning of Ragnarok. The Ghostbusters soon have to deal with Jeremy when he arrives in New York with his aide, DiTillio, ...
Ray is distraught when he discovers his favourite comic, Captain Steel, is to be cancelled. But Ray and the rest of the Ghostbusters get more than they bargained for when Captain Steel and his arch enemy, Dr Destructo, emerge from a page from the last edition of the comic to do battle with one another in the real world. The Ghostbusters team with Captain Steel to defeat Dr Destructo after he takes control of the fire house.
Slimer is blamed by Peter for the fall in the Ghostbusters' finances. So he heads off and in a chance meeting, befriends a young student called Mike who is continually being picked on by a group of bullies. Slimer offers to become Mike's bodyguard and scares off the bullies, the bullies retaliate by finding help of their very own in the form of Barrowhites. But the plan backfires and soon the Ghostbusters get involved to get rid of the Barrowhites before the situation gets out of hand.
A ghost called Buster tries to get a job with the Ghostbusters after failing to hold down many other jobs. But even helping out proves to be a problem for Buster after a whole host of ghosts descend on the fire house which causes an energy build up so big that it puts the whole universe under threat.
Supernatural forces take control of the New York Jaguars' baseball stadium and the Ghostbusters head off to investigate, only to find themselves in the middle of a historic battle between good and evil that takes part once every 500 years.
A funfair owned by a crooked businessman runs into trouble when his unofficial Ghostbusters roller-coaster ride becomes haunted by many spirits. The Ghostbusters are soon called into action when the ride transforms and holds several citizens captive.
The Ghostbusters get called out to investigate strange happenings at the old Walt Fleischer studios, the cartoonist who created Ray's favorite cartoon character, Dopey Dog. They find out the cartoonist, who disappeared 40 years ago, got sucked into a cartoon world where his creations took over, and now they have to get him out.
The Ghostbusters decide to take a vacation after several long months of 'busting and head off to Ray's cousin's farm in the countryside. But their vacation is cut short when they discover all is not well on the farm.
Egon is transformed into a ghost after the team's de-stabler weapon backfires during a battle with a demon. The rest of the Ghostbusters have to act quickly in order to restore Egon back to normal before before time runs out.
Janine turns Ghostbuster after her apartment becomes haunted and the team are busy dealing with a backlog of jobs throughout the city. The Ghostbusters are captured by the demon, Proteus, during a battle with a possessed Atlas statue, and are being held captive. Janine, with the help of Slimer, become the team's only hope of escaping the clutches of Proteus.
During a magic show by the Great Calamari, a ghost appears. The ghost manages to escape from the trap. Peter finds himself trapped in a strange dimension when he enters a cabinet. The others soon discover the ghost is Houdini, the famous escape artist. He's after Calamari for stealing tricks from his secret notes. Once Peter escapes, Calamari is ready to send them all to another dimension.
The Ghostbusters are in competition for the title of "Ghostbuster of the Year". Their mission is to capture an infamous ghost in Hearse Castle. As they search the castle, the only clue they find to the haunting is the word "rosebud".
The Ghostbusters stumble upon a sleeping dragon that was banished by one of Egon's ancestors, Zedekiah Spengler. When the dragon awakens, mistakes Egon for Zedekiah. Egon finds out his ancestor was experimenting in musical incantations in an attempt to refill a dried up well but instead summoned the dragon, a spirit attached to the well.
The Ghostbusters are hired by a mysterious man named Gregore, leader of a small secluded village called Lupusville, that is located deep in the woods, to get rid of a coven of vampires. As they investigate, it turns out that all of the residents are vampires, having their own unusual servants as well. One group is led by Gregore, who took over the town and wishes to come out into the modern world. The other group is led by the old vampire leader, an unnamed vampire who wishes to keep their existence a secret from the world. While Ray and Peter are captured/recruited ...
The spirit of detective Phillip Spade aids the Ghostbusters to catch a cursed Ghost named Blackey. To set things right, the guys must find King Todd's treasure and return it to the museum before the ancient ghost demolishes them.
The Ghostbusters must put an end to a terrible curse over Simon Quegg. Quegg was a selfish, kept to himself man who was cursed 100 years ago to never reach home and in the process is followed by a hideous specter. Accidentally Ray got exchanged for Quegg and it's up to his friends to save him.
A crazy old rich guy attempts to send all of his riches through a makeshift portal to the next world to await for him there. It works, but ghosts begin pouring in through it. The Ghostbusters must stop him before the world is overrun.
At a museum, the Ghostbusters trap a small and harmless ghost. After they take him to the Firehouse, the ghost is accidentally released and it's decided he won't be put into the Containment Unit. The Ghostbusters adopt him as a pet. However Slimer soon finds out a suspicious dark side of the new tenant.
A man summons a demon to get some magical help. The man wants to get rid of all chickens. The demon gives him the power to make things disappear. And promptly uses his ability to make all the chickens on Earth to disappear. The ghost busters investigate, and he makes them disappear. The demon is embarrassed by how he's been using the powers he was granted, and gives the ghost busters a chance to set things right.
Peter's father arrives in town selling phony ghost repellent ponchos to a ship's crew that disappears in the New Jersey Parallelogram; and the Ghostbusters are called upon to find the crew before it's too late.
The Ghostbusters arrive in Paris after workmen on the Eiffel Tower accidentally break into Monsieur Eiffel's secret lab. The workers damage a device that unleashes thousands of ghost. The Ghostbusters discover that the Eiffel Tower is a giant Containment Unit.
The Ghostbusters are fighting creatures in the sewers, chasing down cults and research comic books to succeed in the their mission - to recover the Necronomicon that gets stolen from the public library.
An Irish singer is N:1 in the musical charts. However strange things occur while she is singing. The Ghostbusters must uncover her secret but it would be hard because Peter has fallen in love with her.
The Thanksgiving Day parade gets interrupted when spirits from an old morgue take over a balloon of a praying mantis. The Ghostbusters release the Stay Puft Marshmallow Man from the Containment Unit to fight the huge monster.
A man who Peter had a quarrel with the night before over a girl is attacked by a headless biker. The cops think Peter send the ghost to attack him. The Ghostbusters must prove their innocence by catching it. Is the girl involved?
At a museum, three ancient stones are reunited. This event unleashes dinosaurs and a very powerful demon. As the Ghostbusters fail to do anything, it comes to light that Winston is the only one who can deal with the demon.
Ray is about to inherit an old castle in Scotland. The only condition is that he exorcises the ghost that has plagued it for many years. But when he captures the spirit, an army of battling specters rise to cause massive destruction.
A book called 'The Codex of St. Theophilus' is missing from an abbey in Greece since 1600s. It turned up at a New York auction and is purchased by Peter. The Ghostbusters are unaware that the sealed volume contains within it the Four Horsemen of the Apocalypse.
The ghost of Casey Jones returns and takes over a locomotive for one last midnight ride. Despite his love for trains, a kidnapped Peter would rather be somewhere else in case history repeats itself and the train crashes.
Peter takes his date to the Cloisters in New York, warrior spirits spew forth from the tapestries with only one goal to take Peter's date back into the tapestries with them, where she will remain forever.
Young Kenny is the Ghostbusters biggest fan. After he enjoyed a tour of the Firehouse, Kenny desperately tries to convince his friends that he is a member of the Ghostbusters' team. In order to do that he enters a haunted house with one of Egon's latest inventions.
A paranormal convention comes to New York.The Ghostbusters are called into action. But they are forbidden by the hotel's manager from using their technology for fear of disturbing another group - a convention of dentists.
The Ghostbusters get called out to Detroit by the president of the Generous Motor company when all their cars start self destructing, and the Ghostbusters find that the problem is the same kind of gremlins that took planes apart in WWII are now destroying all the machines in the factory.
The lord and ruler of the sea elementals named Necksa strikes out at the air-breathers who have been polluting the oceans. When the Ghostbusters attempt to stop him, Egon, Ray, and Winston are swallowed by the creature. Alone Peter must save the others.
An unscrupulous film producer reacts with unusual enthusiasm when the Ghostbusters pursue a number of ghosts in his horror movie set. The ghosts help him in exchange for doing a film of their own - a movie that will feature the destruction of the Ghostbusters.
During a rare eclipse of the moon, a rip between dimensions opens; allowing a small friendly ghost to wander off into New York and Slimer decides to look after it. When the ghost's parents come looking for their baby, the Ghostbusters mistakenly capture them. They soon realise their error - but not before the baby disappears again - can they reunite the spooky family before the eclipse is over?
As a professor's exotic treasures are unloaded on the harbour, a 3,000-year-old statue is accidentally dropped, releasing an ancient animal demon into New York City. The creature has the power to give all the animals in the city the ability to talk and interact just like humans and it isn't long before he's using them in his evil plan to take over the world.
After Slimer messes up an experiment, his mind and Egon's are swapped. Facing a ghostly invasion of New York, the Ghostbusters must find a way to swap Egon and Slimer's minds back and save the city from destruction.
One night Slimer hides his favourite book of fairytales under one of Egon's newest machines to stop Ray taking it back to the library. Only when the Ghostbusters wake they find that the machine has made everything in the book come to life. From Little Bo Peep to Jack and the Beanstalk - all the fairytales have become one giant reality!
An ectoplasmic entity leaks out of the containment unit one night and it makes Slimer turn into a big ugly monster during his sleep. One transformation too many and their spooky green buddy will become his alter ego permanently. Can the Ghostbusters figure out a cure before Slimer falls asleep again?
The president of the Stay Puft Company persuades the Ghostbusters to release the giant Marshmallow Man from the containment unit to shoot a commercial - if they do it he'll give $50,000 to the children's hospital. However, during the process of getting Stay Puft out, a vicious phantom escapes intent on seeking revenge against the Ghostbusters.
It's Halloween on the streets of New York City - the Junior Ghostbusters favourite time of year. But when goblins release Samhain, the spirit of Halloween, from the containment unit, the Firehouse becomes his fortress. The Ghostbusters attempts to stop the powerful spirit are foiled as the kids are captured by Samhain and they must send Slimer in to get them out.
A family call the Ghostbusters out to their spooky mansion in the middle of nowhere. There have been some weird goings on and they need the guys to stop the paranormal activity before their guests arrive for a big family reunion the next day. Only as they investigate, the Ghostbusters suspect that if anything is haunting this macabre mansion - it's the people that live in it!
During a demonstration at the local school, a boy named Lee approaches the Ghostbusters to ask for help. His brother Alec has been acting strangely and doing bad things. When the guys decide to investigate, Egon realizes that a Grundel is making Alec behave this way, and if they don't do something soon, Lee will become one too...
The Ghostbusters' old "friend" and nemesis, Walter J. Peck, is back and he's determined to shut down the Ghostbusters for good. But when his attempt to get them arrested backfires he'll have to find another way. Joining up with the BUFO (Bureau of Unidentified Flying Organisms), Peck plans to dismantle the Ghostbusters piece by piece and has his sights set firmly on Slimer...
When the Ghostbusters are called to a posh apartment block to flush out a troublesome ghost, they're bemused to find nothing there. But as they depart, something hitches a ride on the back of the Ectomobile and soon they're on the hunt for a mischievous shape shifter in their own Headquarters.
The Ghostbusters are off on a camping trip and, as they close up the Firehouse and head off, they all agree that they don't want to hear the word ghost for a whole week! But when they finally find their campsite, they soon find that there's something far more spooky hiding in the woods than Ray's campfire stories...