When a family of Trolls moves into the quiet suburb of Biddlesden, it's likely that things are going to get ugly (and possibly hairy and smelly) very soon, since trolls like to roar as loudly as possible and stomp their hairy feet. Even worse, the Trolls have moved in next door to the Priddle family. BIG mistake, and sparks will fly!

Ulrik is desperate to be on his school's soccer team, but he doesn't really understand the rules. His neighbor Warren Priddle certainly isn't about to explain to the troll next door that rain boots are not the right footwear, and being Fierce and "Scaresome" will only get you kicked out of the game!

It's summer and all of Ulrik's school friends seem to be going on something called "vacation," so Mr. and Mrs. Troll decide to investigate. Their neighbors, the Priddles, have just bought a camper, and it seems the Troll family has been invited to join them. When they arrive at the campsite and the Priddles open the camper to discover it full of trolls, they don't seem very pleased. But this is the least of their worries, as stories of a wild, sheep-devouring Beast on the loose near their campsite start to surface, and Ulrik finds himself helping to solve a hairy, scary local mystery.

When Ulrik Troll invites Grumpa for Trollmas (trollish Christmas) he thinks he is doing a good thing. Little does he know his parents have spun a few white lies about life in Biddlesden - its forests, mountains and healthy troll population. Fresh from Norway Grumpa is looking forward to seeing their wonderful new home. He isn't prepared for suburbia, or worse still - people. But most distressing of all, with no real forest where will they catch the goat for their traditional festive goat pie? They decide to steal a goat from the local farm, but when they bring the goat home, Grumpa doesn't react in quite the way they expected - is that fear in his eyes? Another adventure with the wonderful and hilarious troll family and their long-suffering neighbours the Priddles.