North America is in chaos, ruined by years of war, terrorism, and ecological destruction. Marauding motorcycle gangs roam the land, while a secret society of mutants who practise devilish rites terrorize the innocent. Young Toby Johnson lives with his father, one of the Old Believers, a religious sect that clings to stern moral values. Although embarrassed by his father's quaint ways, Toby is horrified when a motorcycle gang attacks their modest homestead. To help the old man, the boy must travel with his dog across the dangerous countryside, a journey on which he is joined by.