Teenage Ashley escapes from her abusive family life and comes to the city to live with her sister who, unbeknownst to her, is one of a group of female half-vampires – THRALLS – who stage large warehouse ‘raves’ and feed on the clientele. As our heroine discovers the horrible truth, she is enlisted to help the girls escape the clutches of their ex-master [Lamas] by resurrecting a powerful demon who will destroy him – and free them from their vampiric curse. But her loyalties are tested when she falls for handsome young Jim, and must choose between her feelings for him and her sister’s dark intentions.