<P> An 18 - year - old girl named Drew Decker (Carmen Electra) receives a threatening phone call while home alone one night . Drew is chased outside by Ghostface, who stabs her in the breast, removing one of her silicone breast implants . She is hit by a vehicle driven by her father, who was distracted by oral sex by his spouse, and is then subsequently murdered by Ghostface . </P> <P> The following day, Cindy Campbell (Anna Faris) meets up with her boyfriend Bobby (Jon Abrahams) and her friends, Brenda (Regina Hall), Ray (Shawn Wayans), Greg (Lochlyn Munro) and Buffy (Shannon Elizabeth). Various news teams, including hack reporter Gail Hailstorm (Cheri Oteri), converge on the school in the wake of Drew's murder . Gail hooks up with Buffy's intellectually disabled brother Special Officer Doofy (Dave Sheridan), hoping to milk the facts out of him . </P> <P> While Cindy is in class, she receives a note reading: "I Know What You Did Last Halloween!" She then realizes that Drew was murdered exactly one year after she and her friends accidentally killed a man during a wild car ride . At a beauty pageant that evening, Greg is killed by Ghostface in plain view, with the audience mistaking Buffy's screams and pleas for help as being part of her act . When Buffy realizes she's won the pageant, she almost immediately forgets about Greg's death and celebrates her victory . </P> <P> After Cindy goes home alone, she is attacked by Ghostface . Cindy locks herself in her room and contacts the police, while Ghostface disappears . Bobby arrives momentarily after hearing the incident, but a knife, a pair of black gloves and a telephone fall out of his pocket, leading Cindy to believe that he was the killer . Bobby is arrested and taken to the police station . Afterwards, Cindy heads to Buffy and Doofy's place, to spend the night with them . When there, she receives a call from Ghostface, mocking her . </P>

Why does doofy kill everyone in scary movie