Ready or Not: Here I Come

After surviving the Le Domas' attempted sacrificial ritual, Grace MacCaullay collapses outside the property and is taken to a hospital. She reunites with her younger sister Faith, whom she has not spoken to since she left for college.

Meanwhile, the Council, an order of six elite families are notified of the Le Domas' demises and prepare to unite at the Danforth complex for another game. The head members include twin siblings Ursula and Titus Danforth, Wan Chen Xing, Viraj Rajan, Ignacio El Caido, and Bill Wilkinson.

Prior to their arrival, Ursula and Titus kill their elderly father Chester, the current "High Seat" of the Council, so they can enter the game simultaneously. Bill attempts to kill Grace at the hospital, but he and the Wilkinsons explode in a shower of blood due to failing to wait for the game's official commencement. Grace and Faith are kidnapped and brought to the complex. They awaken tied and gagged while Le Bail's representative, the "Lawyer", explains their new situation: due to Grace's victory at the Le Domas' hide-and-seek game, the four remaining families must kill her before dawn to acquire the High Seat and a ring with seemingly infinite worldwide power will be provided to the winner. The players are not allowed to kill each other, and their deaths allow the next eldest member of their family to enter. Grace initially refuses to participate, but agrees when Faith's life is put at stake. The eldest members sign a blood oath and the game begins.

Grace and Faith are handcuffed together and put on a golf course. After evading attempts from different families, the sisters manage to kill Viraj in an industrial washing machine. Chen Xing finds them and reveals a loophole: if Grace marries one of the elite's family members, the game immediately ceases, granting her husband the High Seat and allowing her to live. Grace refuses as it would mean selling her soul. Ignacio interrupts them, and Chen Xing unintentionally kills him with a katana. The Wans explode into blood as Ignacio's daughter and Alex Le Domas' ex-fiancée Francesca prepares to enter the game. Faith criticizes Grace's refusal of the opportunity.

Viraj's death allows his brother Madhu to enter the game, but he forfeits head status to his wife Martina. Instead of playing, she drives off from the hunt and destroys the gate in the process. Ursula nearly kills Grace, but Faith saves her and the sisters flee. Grace lambasts Faith's return and wishes they had never reunited, leading a heartbroken Faith to leave. Titus attacks Faith and kidnaps her while Francesca targets Grace, though the latter eventually acquires a shotgun and kills her. Through an intercom, Titus taunts Grace and forces her to the main lounge where Faith is held captive.

Grace storms into the lounge but is cornered by the surviving players. Using Chen Xing's loophole, Grace agrees to marry Titus to ensure her and Faith's safety, handing over the High Seat to the Danforths and concluding the game despite Faith begging her not to. Before the wedding, Ursula privately warns Grace about Titus' psychopathy and her fears of what could transpire under his order. Ursula suggests that she and Grace work together to control Titus after the marriage. Titus, having overheard, kills Ursula, as there is no rule against killing family members. At an underground altar, the marriage ensues before a crowd of Satanic cult members.

After they sign their intertwined familial blood pacts, Grace stabs Titus with a fountain pen, throwing his "no rule against killing family members" statement back at him, and Faith kicks him into an open circular pit full of sacrificed bodies, killing him. Now housing ownership of the High Seat, Grace announces her removal from the organization and throws the ring into the pit. Since the High Seat now belongs to whoever is wearing the ring at dawn, the wedding guests all jump into the pit for a chance at acquisition, murdering each other as they do; no one succeeds before dawn and the entire Council erupts into a torrential blood explosion amidst the area.

Le Bail's spirit briefly appears and nods to both Grace and Faith as they are finally free. The sisters leave the premises alongside the Council's sacrificial goat, and Grace promises never to leave Faith again.