Between the events of ‘Saw’ and ‘Saw II’, a sick and desperate John Kramer travels to Mexico to undergo a risky and experimental medical procedure in hopes of finding a miraculous cure for his cancer, only to discover that the entire operation It is a scam to steal from the most vulnerable. Armed with a new purpose, the infamous serial killer gets back to work, turning the tables on con artists in his signature visceral way through devious, deranged and ingenious traps.