Set between the events of the first and second films, the story follows John Kramer as he travels to Mexico, desperate to find a last-chance cure for his cancer. What he thinks is a hopeful medical procedure turns out to be a scam run by people taking advantage of the vulnerable. Realizing hes been duped, John shifts into his infamous Jigsaw persona, setting up elaborate traps and moral tests for those responsible. The focus stays on his methodical approach as he brings his signature brand of twisted justice to the con artists, all while grappling with his own mortality and pain. The film balances the intense, gory set pieces fans expect with a closer look at what drives John, highlighting his belief that his victims need to learn something from their ordeal. The tension keeps building as each person faces impossible choices, all under the watchful eye of a man who sees himself as both judge and teacher.

This movie contained 4 lost souls - about one every 29 minutes.