Two resentful exes must awkwardly spend Christmas together after learning their new partners are siblings.

In a cursed town, the annual harvest becomes a brutal battle for survival. On Halloween 1963, Sawtooth Jack, a terrifying legend, rises from the cornfields, threatening the town’s children. Groups of boys unite to defeat the murderous scarecrow before midnight. Richie, a rebellious outcast, joins the run, motivated by his brother’s previous victory. As the hunt progresses, Richie makes a shocking discovery and faces a pivotal choice to break the relentless cycle.

As the Barret family's peaceful suburban life is rocked by an escalating series of disturbing events, they come to learn that a terrifying and deadly force is after them.