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 a freaky red tornado hits, Kai knows it's time for battle. Kai chooses his Astro-Jet Striker to battle the wind beast. Can it win over a wind hawk attack? Fast-paced and loaded with high energy, Boy vs Beast takes reading to young boys on their terms.