Arriving in Australia with nothing more than a saddle and his prized six-foot Sharps rifle, sharpshooter Matthew Quigley (Tom Selleck) thinks he's been hired to kill off wild dogs. But when he realizes instead that his mission is murder - to "eliminate" the Aborigines from a wealthy cattle baron's land - Quigley refuses and quickly turns from hunter to hunted. Forced to wage a savage war against his former employer, Quigley proves that no one gets the best of a steely-eyed gunfighter - no one, that is, except the mysterious beauty who rides by his side.