Kirby and his friends hope to attend a fright-night film festival, but their plans are threatened when they get quarantined at school. Meanwhile, Dawn and Belinda get invited to a Halloween party at the house of a popular kid at school.

Kirby learns about the most outrageous prank that ever existed and is determined to find a way to replicate it.

Mitchell takes Kirby's tablet with his mom's birthday surprise, so Kirby takes up the sword and enters Mitchell's gauntlet in order to get it back.