On a cold Halloween night in 1963, six year old Michael Myers brutally murdered his 17-year-old sister, Judith. He was sentenced and locked away for 15 years. But on October 30, 1978, while being transferred for a court date, a 21-year-old Michael Myers steals a car and escapes Smith's Grove. He returns to his quiet hometown of Haddonfield, Illinois, where he looks for his next victims.

After moving to Salem, Mass., teenager Max Dennison (Omri Katz) explores an abandoned house with his sister Dani (Thora Birch) and their new friend, Allison (Vinessa Shaw). After dismissing a story Allison tells as superstitious, Max accidentally frees a coven of evil witches (Bette Midler, Sarah Jessica Parker, Kathy Najimy) who used to live in the house. Now, with the help of a magical cat, the kids must steal the witches' book of spells to stop them from becoming immortal.