When Treva investigates the disappearance of her family's Christmas things, she finds two mischievous trolls who have never had a Christmas of their own.

Poppy and Branch discover that they are but one of six different Trolls tribes scattered over six different lands and devoted to six different kinds of music: Funk, Country, Techno, Classical, Pop and Rock. A member of hard-rock royalty, Queen Barb, aided by her father King Thrash, wants to destroy all other kinds of music to let rock reign supreme. With the fate of the world at stake, Poppy and Branch set out to visit all the other lands to unify...

A troll tries to prevent Trigg from crossing the bridge on the way to school only to be outwitted by the boy's riddles.

A boy from Finnmark and his ice bear help scare away some hungry trolls so that Kyri and her father can enjoy their Christmas Eve meal.

When the eternally optimistic Poppy, queen of the Trolls, learns that the Bergens no longer have any holidays on their calendar, she enlists the help of Branch and the rest of the gang on the delightfully quirky mission to fix something that the Bergens don't think is broken.

Hedgie, the hedgehog, helps Henny, the speckled hen, trick the Tomten who has been eating all of Henny's eggs for breakfast.

When the Trolls move next door to the Priddles, both families find the other strange, which causes many misunderstandings.

Tiny Troll is very unhappy that his mother is leaving him with a babysitter while she goes to a party for grown-ups.

Is a massive Celtic warrior more powerful than the king of the trolls? This ranked lineup of mythical monsters answers that question and reveals more details about each legendary figure.

Helga, a troll, ventures into the world of people to earn her dowry to marry Lars, but things do not work out as she hopes.