It's not easy being the WORST at everything! Hack and Whack are the very worst Vikings in the village - until a fierce and stinky berserker moves in - NEXT DOOR! WILL the brand new school help the twins outwit this villain and his vicious dog, Muddy Butt? And will Twisty Pants, Dirty Ulf and Elsa Gold-Hair help vanquish this foul fiend?