Halloween H20: 20 Years Later

Two decades after surviving a massacre on October 31, 1978, former baby sitter Laurie Strode finds herself hunted by persistent knife-wielder Michael Myers. Laurie now lives in Northern California under an assumed name, where she works as the headmistress of a private school. But it's not far enough to escape Myers, who soon discovers her whereabouts. As Halloween descends upon Laurie's peaceful community, a feeling of dread weighs upon her -- with good reason.

Plot summary via TMDB