Scream 4 - Plot

Plot

On the fifteenth anniversary of the original Woodsboro murders, high school students Jenny Randall and Marnie Cooper are attacked and brutally murdered by a new Ghostface.

The following day, Sidney Prescott returns to Woodsboro to promote her new book with her publicist Rebecca Walters. After evidence is found in Sidney's rental car, Sidney becomes a suspect in the murders and must stay in town until the murders are solved. Her cousin, Jill, who is dealing with the betrayal of her ex-boyfriend, Trevor Sheldon, gets a threatening phone call from Ghostface, as does her friend Olivia Morris. Jill and Olivia, alongside their friend Kirby Reed, are questioned about their calls by Dewey Riley, who is now the sheriff of the town, while one of his deputies, Judy Hicks, assists him in the case. Meanwhile, Dewey's wife, Gale Weathers-Riley, is struggling with writer's block. She gives up the writing and decides to investigate the murder instead.

Sidney stays with Jill's mother, Sidney's aunt Kate Roberts. Later that night, Olivia, who lives next door to Jill and Kate, is attacked and killed by Ghostface as Jill and Kirby watch in horror through Jill's bedroom window. Sidney and Jill rush in to save Olivia only to arrive too late, but the killer injures them and gets away; Sidney and Jill are taken to the hospital. In the hospital's parking garage, Ghostface murders Rebecca. Gale, trying to solve the murders, enlists the help of two high school movie geeks, Charlie Walker and Robbie Mercer, who explain that the killer is using the rules of movie remakes to murder. Charlie concludes that the killer will likely strike at a party being held that night.

Gale goes to the party to investigate. Ghostface injures her but flees when Dewey arrives. Dewey takes her to the hospital. At Jill's house, Sidney discovers that the policemen assigned to guard the house are dead. She also discovers that Jill has left the house and gone to Kirby's. Sidney goes down to tell Kate, but the killer appears, kills Kate, and disappears again. After Deputy Judy Hicks arrives, Sidney rushes to Kirby's house to save Jill on her own.

Jill, Kirby, Charlie, Robbie and Trevor are at Kirby's house when Ghostface appears and kills a drunken Robbie. Sidney arrives at the house. During a confrontation with Ghostface, Sidney instructs Jill to hide under a bed upstairs, while she narrowly escapes Ghostface. Kirby is forced to answer horror movie trivia to save Charlie, who is tied up outside. Sidney returns upstairs to find Jill. After Kirby answers Ghostface's questions, she goes outside to untie Charlie, believing that she has won the game. He suddenly stabs her in the stomach and reveals himself as the Ghostface killer, before leaving her for dead. Sidney is confronted by Charlie and a second Ghostface, who is revealed as Jill. She explains that they want the attention Sidney got for surviving the murders, and that they intend to frame Trevor as Ghostface; she then pulls Trevor out of a closet and shoots him in the groin for his previous betrayal of their relationship, then in the head, killing him. Jill then betrays and kills Charlie by stabbing him, intending to pin him as Trevor's accomplice. Jill then stabs Sidney in the stomach. As police near the house, she mutilates herself and plants evidence to make it seem as if Trevor attacked her. Dewey, Judy, and the rest of the police then stumble upon the carnage.

Jill is then taken to the hospital. After discovering that Sidney had survived, she goes to Sidney's hospital room and attempts to finish her. Dewey, Gale, and Judy intervene, having been clued by a detail about Gale's injury that Jill somehow knew. Jill subdues Sidney's rescuers, which gives Sidney the chance to shock Jill with a defibrillator and then shoot her in the chest, killing her. Dewey calls in all police units, as media reporters outside confirm Jill as a survivor and a "hero, right out of the movies."