Three years after the murders at Hillcrest Academy, a guilt-ridden Laurie Strode is institutionalized in Grace Andersen Sanitarium. It is revealed that the person she previously decapitated, whom she believed to be Michael Myers, was in fact a paramedic that Michael had switched clothes with and rendered mute. Anticipating her brother's inevitable return, Laurie sets a trap on the sanitarium's roof.
Michael appears and chases Laurie to the rooftop, where her trap works and temporarily incapacitates Michael. However, Laurie's fears of killing the wrong person again get the better of her. When she attempts to remove his mask to confirm his identity, Michael stabs and throws her off the rooftop to her death.
