Two Terrible Vikings & Grunt the Berserker

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?