It has been over a decade since Jigsaw died. However, after a new series of murders occurs, police find themselves chasing after the original Jigsaw Killer - John Kramer. Could John Kramer still be alive or is another killer out there with a different motive?

One year after Mike Lawford's young son disappeared during a Halloween carnival, he is haunted by eerie images and terrifying messages he can't explain. Together with his estranged wife, he will stop at nothing to unravel the mystery and find their son-and, in doing so, he unearths a legend that refuses to remain buried in the past.