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 isnt 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 doesnt 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.