Following his fateful Halloween night murder rampage in the quiet town of Haddonfield, Illinois, Michael Myers begins 17 years of incarceration at the Smith's Grove Sanitarium maximum-security mental facility where he is treated by noted child behaviorist Dr. Samuel Loomis--the only person who can truly understand Michael's evil nature. Now, 17 years later, Michael escapes from the mental facility on Halloween day and begins a murderous trek back to Haddonfield to continue his killing streak and seek resolution to events from his past.