In the timeline between ‘Saw’ and ‘Saw II’, ailing and desperate John Kramer heads to Mexico seeking an experimental medical treatment that promises a miraculous cure for his cancer. However, he soon realizes that the entire setup is a fraudulent scheme designed to exploit the most vulnerable. With a renewed sense of purpose, the notorious serial killer resumes his grim work, exacting revenge on the swindlers by subjecting them to his trademark elaborate and twisted traps.