On Halloween 1963, Haddenfield, 10-year-old Michael Myers, estranged and mentally unstable, is imprisoned in Smith’s Grove Sanitarium under the care of Dr. Sam Loomis for the murders of his mother’s boyfriend, his older sister, and her boyfriend. Now, 16 years later, he escapes and now in search of his baby sister Laurie and Dr. Loomis must warn the residents of Haddenfield and get to Laurie before Michael does.