Brian teaches Guthrie how to hunt and also to respect all wild life, but Guthrie is not sure he could shoot to kill. Several days later, Adam risks being mauled when he and his brothers track and corner ""Old Scarback"", a wounded mountain lion suspected of killing local livestock. When Adam is knocked unconscious in a fall, Guthrie is forced to make a life-or-death decision when he sees the lion afeter Adam.