Only a wall divides Earth from the Beasts of Beastium. Only a boy and his dogbot defend the wall and protect Earth. Kai Masters. Border guard and beast battler! Kai is at a barbecue one summer day when it starts to snow. He knows that this can only mean trouble -- the beasts must be at it again! Kai and his robo-dog BC set out with some very cool gadgets to stop the new beast and protect the walls of Earth. But will it be enough?