William Easton is an oily executive who denies John Kramer (a.ka. Jigsaw) access to an experimental cancer treatment. This lands William and a handful of additional lost souls into yet another chamber of horrors. Now, the game is overseen by Jigsaw's acolyte, Detective Hoffman. However, when the FBI draws closer to Hoffman, he is forced to set his game into motion, and Jigsaw's grand scheme is finally understood.