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. When dead fish covered in glowing moss wash up on the beach, Kai knows it's time for battle. Was Kai right to choose the Torpedo Bowshot to battle the water beast? Will it work against toxic jellyfish? Will it be enough to take on a wave attack? Fast-paced and loaded with high energy, Boy vs Beast takes reading to young boys on their terms.