Trying to return a rat creature cub to the mountains, Fone Bone and Smiley Bone encounter yet another adversary: the sly and mighty mountain lion, Rock Jaw. Fone Bone and Smiley Bone strike out into the wilderness to return a lost rat creature cub to the mountains. It doesn't take long before they run smack into Rock Jaw, "Master of the Eastern Border," an enormous mountain lion with a none-too-friendly disposition. Life gets even more complicated when they befriend a grou