Billy Jack is introduced as an enigmatic, half-Indian Vietnam veteran who shuns society, taking refuge in the peaceful solitude of the California Central Coast mountains. His troubles begin when he descends from this unspoiled setting and drives into a small beach town named Big Rock (Morro Bay). A minor traffic accident in which a motorist hits a motorcyclist results in a savage beating by members of the Born Losers Motorcycle Club. The horrified bystanders (including Laughlin's wife, Delores Taylor, and their two children in cameo roles) are too afraid to help or be involved in any way. Billy Jack jumps into the fray and rescues the man by himself. At this point the police arrive and arrest Billy for using a rifle to stop the fight. (The irony here is that, unknown to Billy, the motorist is the one who starts the fight by inexplicably insulting one of the bikers.)
Billy Jack is a "half-breed" Navajo people, a Special Forces (United States Army) Vietnam War veteran, and a hapkido master.
