High school teenagers accidentally unleash an ancient Irish entity on their hometown and must stop it before midnight on Halloween.

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.

1920, rural Ireland. Anglo-Irish twins Rachel and Edward share a strange existence in their crumbling family estate. Each night, the property becomes the domain of a sinister presence (The Lodgers) which enforces three rules upon the twins: they must be in bed by midnight; they may not permit an outsider past the threshold; and if one attempts to escape, the life of the other is placed in jeopardy. When troubled war veteran Sean returns to the nearby village, he is immediately drawn to the mysterious Rachel, who in turn begins to break the rules set out by The Lodgers. The consequences pull Rachel into a deadly confrontation with her brother – and with the curse that haunts them.