SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
As a fierce battle rages over Jigsaw’s (Tobin Bell) terrible legacy, survivors seek support from a fellow survivor and self-help guru, who has a few dark secrets of his own. Meanwhile, crooked cop Hoffman (Costas Mandylor) seeks revenge against Jigsaw’s wife and an author who has his own story.
SPOILERS AHEAD
Saw 3D (Saw: The Final Chapter) Plot Summary and Synopsis
Following the events of the first film, Dr. Lawrence Gordon attempts to flee the scene of his game, but is forced to cauterize his ankle stump with a steam pipe and passes out. In the present, another game takes place in a home improvement storefront of a public square where two men, Brad and Ryan, are bound to opposite sides of a worktable secured to a sliding carriage with buzzsaws while their mutual lover Dina is suspended above a third saw.
The men have sixty seconds to shove the saws into their opponent to save Dina, who had manipulated both of them into fulfilling her needs by committing crimes. Realizing her betrayal, Ryan and Brad concede a truce and drive the sawblade towards Dina, bisecting her.
After witnessing Mark Hoffman’s survival from his trap, Jill Tuck seeks help from Internal Affairs detective Matt Gibson and offers to incriminate Hoffman in exchange for protection and immunity. Meanwhile, Hoffman abducts a gang of skinhead white supremacists and places them in a trap at an abandoned junkyard that kills all four of them. He also captures Bobby Dagen, a self-help guru who achieved fame and fortune by falsifying a story of his own survival. Bobby awakens in an abandoned psychiatric hospital and is informed that he has one hour to save his wife Joyce, who is chained to a steel platform that gradually pulls her down as she watches Bobby’s progress.
After escaping his cage hanging over a floor of spikes, Bobby navigates his way through the asylum, attempting to complete his other tests and to rescue his publicist Nina, lawyer Suzanne, and best friend Cale, all who knew of Bobby’s lies and aided him in fabricating his story. Despite his efforts to save them, all of them are killed in their respective traps. Bobby eventually unlocks the door with the combination from his upper wisdom teeth and reunites with his wife.
Gibson discovers the location of Bobby’s game and sends a SWAT team, who are sealed in another room and killed by toxic gas. Finding Hoffman’s command center, Gibson realizes that Hoffman gained access to the police station during the games, having been brought into the morgue in a body bag with the intent of hunting down Jill. Before he can warn the station, Gibson and his remaining men are killed by an automatic turret gun.
Meanwhile, Bobby is forced to reenact his supposed escape from the trap he survived, by driving two hooks through his pectoral muscles and hoisting himself above the ceiling to deactivate Joyce’s trap.
However, before Bobby is able close the circuit, his strength fails and he falls, unable to continue. As the time expires, a brazen bull capsule closes around Joyce and incinerates her. Elsewhere, Hoffman infiltrates the police station, killing everyone in his path before reaching Jill, whom he executes with the original Reverse Beartrap.
Hoffman then destroys his workshop and prepares to leave town but is subdued by three pig-masked figures, the leader of whom reveals himself as Dr. Gordon. A series of flashback reveal that John Kramer found Gordon after he escaped his game and recruited him as an apprentice; Gordon has been helping John in secret ever since, and received special instructions to protect Jill and help her fulfill John’s legacy after his death.
Saw 3D (Saw: The Final Chapter) Ending
Gordon shackles Hoffman in the same bathroom where he was tested and tosses away the hacksaw he had used to saw his foot off. He then shuts off the lights and seals the door, leaving Hoffman to die.
Source: Wikipedia (CC BY-SA 3.0).