In the secluded town of Hellsville, where supernatural beings from folklore coexist, a group of unlikely friends—delinquent vampire twins Alis and Lucy, a bubbly zombie named Carys, and the town's only human, the moody and cynical Molly—unwittingly uncover an ancient artifact with the power to control all supernatural entities.

As they delve deeper into its dark history, they must confront a sinister force that threatens to destroy the fragile balance of their world. Bound by loyalty and rebellion, the friends are thrust into a deadly game where the stakes are nothing less than their existence and the fate of Hellsville itself.