Shudder will release Hallowarrior on October 16.

Milly Shapiro (Hereditary) stars as Pumpkin, the last girl on earth and sole survivor of a humanity-ending plague, scavenging the wasteland for supplies on the eve of Halloween.

Pumpkin’s lonely holiday ritual is interrupted by the arrival of a savage gang of raiders at her doorstep. Outnumbered and armed with candy, wit, and weapons, Pumpkin must ferociously fight back to survive the night.

Ajani Russell (“Betty”), AJ Bowen (You’re Next), and Shannyn Sossamon (Sinister 2) round out the cast.

Writer-director Ben Sottak makes his feature directorial debut on the project, based on his 2021 short Scavenger.