As a result of Casper being too friendly when playing with a boy named Jimmy, Kibosh: The King of the Underworld has Casper enrolled into a Scare School headed by the two-headed headmaster Alder and Dash. He befriends Ra, a mummy with unraveling issues and Mantha, a zombie girl who keeps falling apart.
Casper helps his vampire friend Fang Decay from his tooth ache by taking him to a fleshie dentist. Casper feels attracted towards Mantha, a female ghost, for the first time while helping her out for the Scare Day competition.
it’s the Scare Day competition and Casper in a helpful manner tries to support Mantha for her participation. Casper feels attracted towards Mantha, a female ghost, for the first time. Mantha is determined to win the competition as the first ever zombie to do so.
Mantha has a hard week as she replaced her arm with a tentacle that caused her big trouble at school.
Casper creates a creature out of cafeteria leftovers, which turns out to be a scary beast destroying everything and is difficult to control.
Casper consults his uncle for his biggest scare act in the Fright Stuff Competition.
Alder and Dash are terrified by a bunny that Casper tries to protect at the school.
It’s the grimiest day on ghost planet. The ghost kids are up to scariest testing.
Casper because of his helpful nature does a lot of work for Jimmy’s magic show. Ra and Mantha motivate tired Casper to be less friendly and helpful towards Jimmy.
Casper has a secret mission to end bullying at ghosts school. For this brave task, he teams up a secret squad.
Casper and Professor Thurdigree Burns go for an unfriendly visit to a medieval themed restaurant in Deedstown. Professor Burns awaits his revenge from the knights at the restaurant.
Ra feels that he is turning into a vampire after he took bites of Thatch’s sandwich.
A battle of bands competition is going to be held at Deedstown. Casper and Jimmy team up to form a rock band.
Jimmy’s dad has decided to move his family away from Deedstown. Casper and friends must haunt the house to stop Mr. Bradley from selling the house.
Casper because of his friendly and kind nature helps Ra for an athletic task. Will Casper’s support help Ra to win a challenging task?
Ra has become the popular ghost at school as he’s a rich kid. Meanwhile, Thatch, Alder and Dash make a plan and try to take away Ra’s riches.
Wolfe’s strange experiment interchanges Ghost students’ personalities, such as the evil people act as nice people.
Casper signs up as the first ghost for a scout troop formed by Franken gym teacher. Thereafter, Scout troop gets disapproved by their agenda to scare people.
Thatch gets stuck in weird Halloween party on Halloween day in Deedstown.
Casper helps his human friend Jimmy when Norman the bully comes after him. Casper must protect Jimmy from Norman by hiding him.
Kibosh forces Casper to win the test for class representative. But Casper has no intentions to hurt Mantha who’s also running.
Casper and friends have no choice left to help Jimmy when he runs into hives and needs treatment at human hospital.
Ra escapes his home for the school camping trip and gets lost in the woods with Casper and Mantha.
A lesson in taking possession of a human body gets Casper into trouble. Norman takes Casper’s ghostly form and brings in more trouble.
Magical shrink dust is found by the bully Norman and results in big trouble for the whole town.
Wolfie wakes up to a terror state of mind; he has turned into a human in a ghost town!
Casper has been given the responsibility to bad cheer in Deedstown. But he really wishes to spend time with his human friend, Jimmy during Christmas.
Feeling lonely on his birthday, Ra goes to meet his mummy friends at the Deedstown museum.
Casper discovers a clock that has powers to stop time. Later, when the clock gets broken Casper and friends try to save the day by finding out a way to fix the clock.
Casper becomes the match maker, when Frakengymteacher secret love with History teacher, Hedy is revealed. Casper and friends set up a romantic mystery dates for them.
The Winter Chill Dance is coming up and Ra is all set to become the King.
On Take Your Kid to Work Day, Jimmy’s dad takes him along and makes him a junior creature catcher for the day. On the other hand, Casper has got an assignment to do.
Mosshead proves to be the world’s most annoying houseguest at Casper’s home.
Ra secretly uses the all answers knowing machine called Anwsertortium and poses as genius until he puts Wolfie in danger.
Casper has found Cappy’s old treasure map and assures pirate to find his lost fortune.
Casper is shocked when his uncles Stinky, Fatso and Stretch return to Scare School.
When Professor Burns required one substitute teacher Flyboy’s father voluntarily takes the job.
Casper has to take Quasi’s work as a punishment for influencing him to go for a strike.
Cappy has to find a fist mate and only Casper is up for the dangerous challenge.
A ghost has stolen a precious artwork from Deedstown gallery. Casper feels that his uncles have committed this crime.
Ghost kids raise gloutches for a school project.
Mantha visits Deedstown and sees a mob attacking a group of Zombies. She counterattacks mob only to find out that the zombies were not real!
Ra gets stuck in the Dimension Tube, which Casper tries to fix before Ra is gone forever.
Ra buys a hi-tech device called Sarcophagus and gets into big trouble.
Professor Thurdigree Burns comes to Scare School with dragon flu. Casper and friends must find a cure to this disease.
Teachers of Scare School make a plan to prove Kibosh that they have not gone docile on ghost kids.
Mantha has come down with an embarrassing disease called Crypt Critters. She is scared and does not wish to visit the nurse. Casper must help her out.
Jimmy’s father gets kidnapped by a dangerous underworld gang and now Casper and friends must rescue him.
Master Blister takes over as headmaster of Scare School as Alder and Dash gets fired by kids trick on them.
Kibosh informs that a powerful force has entered to attack Scare School.
The Students and staff take a refuge from the rampaging force, which has been threatening the Scare School. Casper and his friends must find out the identity of the force.
The students and staff succeed in escaping Scare School before the powerful force takes away all their super powers.
Only hope left for the ghost creatures to win the battle from the powerful foe are Casper uncles who are captured by humans of Deedstown.