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. Things have changed in Beastium. Beasts have appeared in the border-lands. New beasts. Combination beasts. Kai will have to learn quickly to battle these beasts. This time he will also have special transport and battling vehicles, but will it be enough? When mud starts to fall from the sky, Kai knows it is time for battle. Kai and his Sludge Bot will have to work hard to stop the mud beast.
Things are going to get dirty. Previously published as Sludgia.