Fact1: track runner Laura Ramstead During is pushed by crowd and demanding coach high school track, Fact2: Laura is announced to be dead upon examination, Fact3: Laura 's older sister Anne Ramstead returns from US Navy to visit mother and grumpy stepfather in town, Fact4: assailant crosses out Paula 's face after circling Laura 's face, Fact5: woods and encounters is heading for auditorium as special guest for graduation rehearsal
Output: During a high school track meet at Midvale High School, track runner Laura Ramstead Ruth Ann Llorens is pushed by the crowd and her demanding coach. Apparently, Laura collapses after crossing the finish line after completing a 100 meter race in 30 seconds, and is announced to be dead upon examination. Two months later, Lauras older sister Anne Ramstead Patch Mackenzie returns from the US Navy to visit her mother Beverly Dixon and her grumpy stepfather Ronald Hal Boker in town. After being dropped off from a truck driver, she notices a girl named Paula running into a wooded area, who is then killed by an assailant wearing black gloves and having a stopwatch. At the school, the assailant steals a photo of the track team and crosses out Paulas face after circling Lauras face. Meanwhile, Anne arrives home, planning to leave after graduation day, and discusses with her mother about Lauras demise. After, Anne unpacks her belongings upstairs including a gray sweatshirt and a pair of black gloves. Track member Sally Denise Cheshire is walking through the woods and encounters Anne, who is heading for the auditorium as a special guest for a graduation rehearsal. Later, Anne goes to visit Kevin E. Danny Murphy, who was Lauras boyfriend. Kevin shows Anne a photo album of Laura, and Anne gives Kevin one of Lauras track medals in which he thanks her for. Track team mean girl Dolores Linnea Quigley seduces a teacher in the music room. The next day, an unfocused Sally goes to the locker room after trying to concentrate with her gym bar routine, where she is killed by the assailant wearing a fencing mask and ends the stopwatch after 30 seconds. Later, Principal Gugilone Michael Pataki slices an apple with a knife, where he puts it in his desk drawer containing a stopwatch and various knives. Inside the school, Anne speaks to Coach Michaels, who is frustrated on being blamed for Lauras death, when in reality a blood clot in her heart killed her. Soon, the masked killer begins to murder many of the track members and students, causing a concern for parents to contact Principal Gugilone about the missing children and resulting an investigation from Inspector Halliday Carmine Argenziano. While Dolores is chased through the woods during a local festival at night. No one is able to hear her screams for help over the festivals loud music and she is eventually beheaded by the murderer. Halliday speaks to an angry Michaels, in which the coach responds that he was fired due to bad publicity and being accused. In the locker room, two bullies named Doris Vanna White and Joanne Karen Abbott discover Sallys body in a locker, prompting Michaels as well as Kevin to the area. Kevin suddenly accuses Michaels as the killer, resulting a fight and Michaels subduing Kevin before fleeing. In the woods, Kevin catches up to Michaels, where he reveals himself as the killer and turns hostile on Michaels. During the struggle, Halliday shoots Michaels instead of Kevin, assuming the coach was the killer. Kevin then lies to how Michaels was going to kill him. Sometime later, Anne investigates Kevins house upon the discovery of Lauras corpse in his room, giving chase as the murderous Kevin follows her. While fighting in the track field much to her horror, Anne discovers Doloress decapitated head. Kevin is ultimately pushed into spikes by Anne and seemingly killed. After giving her statement to the police, a traumatized Anne returns home that night and hallucinates an undead Kevin in her room, when it reality is just her drunk stepfather Ronald. The next morning, Anne impassively says goodbye and leaves the town on a bus while the Graduation Day banner remains hung over the main street. In an postcredits scene, the killers hand ends the stopwatch at 30 seconds.