On October 31, 1963, six-year-old Michael Myers brutally stabs his sister Judith to death with a kitchen knife at their home in Haddonfield, Illinois. He is sent to Smith's Grove-Warren County Sanitarium and placed under the care of psychiatrist Dr. Sam Loomis (Donald Pleasance). Loomis suspects that there is more to Myers than meets the eye and plans to have him committed indefinitely, despite the fact that Michael seems docile and does not speak...