Plot
The movie begins as a girl called Drew Decker (Carmen Electra) is making popcorn in her house, when she receives a phone call from a person asking if she likes scary movies. The person reveals that he is watching her and then proceeds to attack her with a knife. She escapes into her garden with the killer on her tail, who eventually rips off her clothes and leaves her in her white bra and panties. After Drew passes through a set of sprinklers, she is accidentally run over by a speeding car. The killer catches and kills her and the opening credits start to roll.
The next scene takes place in the house of Cindy Campbell (Anna Faris) as her boyfriend Bobby Prinze (Jon Abrahams) shows up. Then, her father enters the room and Bobby hides under the bed. Cindy's father tells her that he'll be out of town doing business with Uncle Escobar. Next day in school, the news teams are trying to interview the police and students who knew Drew, but get turned down. In order to get a lead, Gail Hailstorm (Cheri Oteri) has sex with the retarded brother of Buffy Gilmore (Shannon Elizabeth), Doofy Gilmore (Dave Sheridan). The group (Cindy, Brenda Meeks (Regina Hall), Greg Phillipe (Lochlyn Munro), Ray Wilkins (Shawn Wayans), Bobby and Buffy) gather around the fountain and discuss how the killing happened exactly one year after their car accident.
Here, they recall how while drunk driving, Bobby and the rest of the group, along with Drew, accidentally hit a man but only injured him, then Greg (while trying to get rid of their beer) flings the bottle into the air and hits the man they hit (who was walking away at the moment) and really kills him. In the end, they hurl the body into the shore and swear to tell no one. While Cindy is in class, she receives a note saying that someone knows what they did last Halloween, she then recalls her date with Bobby, but then receives a note that says "No bitch! I'm talking about the guy you killed!" and gets scared.
During the miss Teenage Beauty contest at school, Buffy is about to perform her talent, an acting piece, but sees how Greg is murdered by the killer in the audience and starts screaming for help. The audience believes she is acting and give her the first prize. That night, Cindy is attacked by the killer, but she calls the cops and the killer escapes. Then Bobby shows up with the same gloves and knife as the killer and is arrested. Cindy goes to stay with Buffy that night but receives a call from the killer and has Bobby set free.
The next day, while changing in the locker rooms, Buffy teases Cindy about getting scared by the killer's phone call and Cindy leaves, offended. After everyone leaves the locker room, Buffy is left alone and the killer shows up. Buffy, noticing the 90's horror movie cliché pretends to be scared, then pretends to run around, then to make it more cliché breaks her own leg, leaving herself helpless and allowing the killer to cut off her head. However, (against all biological laws) her head stays alive and says "Ooh! Look at me I'm all dead, I'm a gross scary severed head!" prompting the killer to shove her head in a lost and found bin.
Ray asks Brenda to the movies and they go to see Shakespeare in Love, Ray goes to the bathroom and (since Ray shows several signs of being gay throughout the movie) peeks on a guy peeing and gets impaled through the head with the guy's penis. Then, the killer shows up at the cinema and sits next to Brenda, Brenda then starts talking throughout the movie and eventually starts talking on her phone. As the killer slowly pulls out his knife to kill her a pissed off audience member snatches the knife from him and stabs Brenda, then the whole audience starts attacking her until she finally dies in front of the movie screen.
In order to not stay alone, Cindy organizes a party in her house. During the party, Cindy has sex with Bobby. The killer then shows up to kill Shorty Meeks (Marlon Wayans), Brenda's stoner brother but winds up getting high with him and his friends and scares Cindy with a phone call blowing his secret strike. The killer, pissed off with losing his surprise attack (and after accidentally killing all of Shorty's friends while swinging his hook around in a rap off) attacks Cindy and Bobby. They both escape and Bobby reveals that he and Ray (who survived getting impaled with a penis) are two killers who are trying to start a new gay life in Los Angeles, but must first get rid of everyone who knows them.
Bobby shoots Shorty and kills him, then he and Ray prepare to kill Cindy, but since they said they are copying the real killer, the real killer shows up and slaughters them with his hook. Then the killer proceeds to have a The Matrix-style fight with Cindy using bullet time and winds up getting beaten and escapes. The police show up and take Cindy to the station, where they find out that Buffy's brother Doofy was actually faking to be retarded and is the real killer. The camera turns to a shot of Doofy walking down the street and pulling off his retarded disguise, then climbing onto Gail Hailstorm's car and driving away. The sheriff and Cindy find Doofy's disguise in the street and Cindy proceeds to scream "NOOOOOO!" until she is hit by a car and killed.