 Governor Bronson (Charles Trowbridge), who raised Bob Wayne (Robert Wilcox) from childhood after the death of his parents, is killed at the hands of mad scientist Doctor Satan (Edward Ciannelli).Before he dies, Bronson confides to Wayne a secret about his father who had been an outlaw in the Old West, who fought injustice while wearing a chainmail cowl and leaving small coiled copper snakes as his calling card.Following his guardian's death, Wayne decides to adopt his father's thirst for justice and wear his Copperhead mask.