On Halloween

On Halloween 1990 in Haddonfield, Illinois, having already exhibited signs of psychopathic tendencies, a ten-year-old boy, Michael Myers murders his school bully Wesley, his abusive stepfather Ronnie, his promiscuous older sister Judith and her boyfriend Steven, only sparing his baby sister, who he calls "Boo". After one of the longest trials in the state's history, Michael is found guilty of first-degree murder and sentenced to Smith's Grove Sanitarium under the care of child psychologist Dr. Samuel Loomis. Michael initially cooperates with Loomis and his mother Deborah, whom he loves dearly, as she visits him regularly. Over the following few months, Michael starts dissociating and fixates on his papier-mâché masks, withdrawing from the people around him, even his mother. When Michael ends up killing a nurse as Deborah is leaving from one of her visits, she is unable to handle the situation and commits suicide. For the next fifteen years, Michael continues making his masks and not speaking to people. Loomis, having continued to treat Michael over the years, attempts to move forward with his life and closes Michael's case. Later, Michael escapes from Smith's Grove, killing the guards and facility staff in the process. He then kills a truck driver, takes his coveralls and makes his way back to Haddonfield. On Halloween day, Michael then arrives at his now-abandoned childhood home, recovering the kitchen knife and Halloween mask he stored under the floorboards the night he murdered his family. Meanwhile, teenage Laurie Strode and her friends Annie Brackett and Lynda Van Der Klok prepare for Halloween. Throughout the day, Laurie witnesses Michael watching her from a distance. Later that night, Lynda meets up with her boyfriend Bob Simms at Michael's abandoned home. Michael appears and then strangles Lynda after stabbing Bob. As Laurie is babysitting Tommy Doyle, Michael murders her parents, Mason and Cynthia. Dr. Loomis, having been informed about Michael's escape, drives to Haddonfield in search for him. After obtaining a handgun, Loomis warns Sheriff Leigh Brackett, who rushes over to the Strode home. While on the way, he explains to Loomis that Laurie is actually Michael's baby sister, having been adopted by the Strodes after their late mother's suicide. After convincing Laurie to babysit Lindsey Wallace while spending time with her boyfriend Paul, Annie is attacked by Michael after he kills Paul at the Wallace residence. Bringing Lindsey home, Laurie finds Annie badly injured on the floor but still alive and calls for help. Michael attacks Laurie, chasing her down the street and back to the Doyle residence. Loomis and Brackett hear the call over the radio and head toward the scene. While the kids hide in the bathroom, Michael kidnaps Laurie and takes her back to their old home. He tries to show Laurie that she is his sister and presents a photo of the two of them together. Unable to understand, Laurie stabs Michael in the neck before escaping the house. Michael chases after her, but Loomis arrives and shoots him three times. Recovering, Michael recaptures Laurie and heads back to the house. Loomis intervenes, but Michael subdues him by crushing his skull. Laurie takes the gun and runs upstairs where she hides inside of the walls. Michael corners her on a balcony and charges at her head-on, knocking them both over the side of the railing. Laurie awakens over an unconscious Michael and points the gun at his face, with Michael grabbing hold of her wrist just as the gun goes off. Laurie drops the gun and starts screaming maniacally as police sirens are heard in the distance.