It's Henking Day, a Troll holiday, and the gang tries to find Grandpa Blogg's tree-home.
The students bring in their pets for a Pet Day competition, making Niblet feel left out.
The class joins Captain Hook in a quest for the missing pieces of his treasure.
The class takes a field trip to a petting zoo where they must complete Puckish Pete's play-along challenge; they must feed a hydra, play with a kraken, and ride a unicorn.
The students meet a troll who threatens to take over the school playground unless they can solve her riddles.