On Halloween night in the small fictional town of Haddonfield, Illinois, six-year-old Michael Myers inexplicably stabs his older sister Judith to death with a kitchen knife in their home, and is incarcerated at Smith's Grove sanitarium.Fifteen years later, on October 30, Michael's psychiatrist Dr. Samuel Loomis and his colleague Marion Chambers arrive at the sanitarium to escort Michael to court. Michael escapes by stealing their car and returns to Haddonfield, killing a mechanic for his coveralls, as well as stealing a white mask and knives from a local hardware store.