Lucius, Smiley and Phoney are attacked by rat creatures in the forrest, barely making it to Lucius' tavern. At the farm, Fone Bone and Thorn are having strange dreams and Gran'ma Ben suddenly begins revealing long-kept secrets and new dangers.
Fone Bone and Smiley return a lost rat creature cub to the mountains and discover Rock Jaw, a giant mountain lion whose big ambitions bring him face-to-face with monstrous competition.