As war spreads through the Valley and the rat creatures mount a vicious offense, Gran'ma, Lucius, Phoney Bone and the villagers join the Veni Yan warriors and set up base camp at Old Man's Cave to make a final stand against the Rat Creature army. Will Fone Bone be able to hold the alliance together? Will the rat creatures finally take over the valley and unleash the power of the Lord of the Locusts? Find out and discover much much more in this pivotal book.