As a deadly battle rages over Jigsaw's brutal legacy, a group of Jigsaw survivors gathers to seek the support of self-help guru and fellow survivor Bobby Dagen, a man whose own dark secrets unleash a new wave of terror.

Special Agent Strahm is dead, and Detective Hoffman has emerged as the unchallenged successor to Jigsaw's legacy. However, when the FBI draws closer to Hoffman, he is forced to set a game into motion, and Jigsaw's grand scheme is finally understood.

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.