Rusty Griswold takes his own family on a road trip to "Walley World" in order to spice things up with his wife and reconnect with his sons.

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.