High school student Kozue spreads flyers in search of her missing classmate. A psychopath lures her to his place, where he imprisons her. The psychopath gets his kicks by raping his victims with a chrome vibrator, poisoning them then photographing them as they die. However, when Kozue doesn’t act like his typical victims they start up a strange and twisted relationship.
Following Jigsaw's grisly demise, Detective Mark Hoffman is commended as a hero, but Agent Strahm is suspicious, and delves into Hoffman's past. Meanwhile, another group of people are put through a series of gruesome tests.
FBI Agent Lee Harker is assigned to an unsolved serial killer case that takes an unexpected turn, revealing evidence of the occult. Harker discovers a personal connection to the killer and must stop him before he strikes again.
A year after the murder of her mother, a teenage girl is terrorized by a masked killer who targets her and her friends by using scary movies as part of a deadly game.
Two men wake up to find themselves shackled in a grimy, abandoned bathroom. As they struggle to comprehend their predicament, they discover a disturbing tape left behind by the sadistic mastermind known as Jigsaw. With a chilling voice and cryptic instructions, Jigsaw informs them that they must partake in a gruesome game in order to secure their freedom.
Despite Jigsaw's death, and in order to save the lives of two of his colleagues, Lieutenant Rigg is forced to take part in a new game, which promises to test him to the limit.