Upon seeing an advertisement placed by Australian land baron Elliott Marston, American sharpshooter Matt Quigley eagerly responds, hoping for some action shooting dingoes on his property. However, his excitement quickly turns to horror when he discovers that Marston's true intention is to exterminate the indigenous aboriginal population. Feeling a strong sense of moral duty, Quigley refuses to carry out Marston's twisted plan and decides to flee. Despite seeking refuge with American expatriate Crazy Cora, Quigley realizes that he is caught in a dangerous game of cat-and-mouse with the ruthless Marston. As the stakes escalate, Quigley must rely on his sharpshooting skills and resourcefulness to outwit his deadly adversary and protect the innocent lives threatened by Marston's diabolical scheme.