Irwin Yablans

Dr. Dan Challis and murder victim daughter Ellie Grimbridge uncover a terrible plot by small-town mask maker Conal Cochran, a madman planning a Halloween mass murder utilizing an ancient Celtic ritual. The ritual involves a boulder stolen from Stonehenge, the use of Silver Shamrock masks, and a triggering device contained in a television commercial — all designed to kill millions of children.

Fifteen years after murdering his sister on Halloween Night 1963, Michael Myers escapes from a mental hospital and returns to the small town of Haddonfield, Illinois to kill again.