The feeders walk among us. They sap our energy and cause sudden old age death. If governments told people the truth, it would shatter the fabric of humanity. Frank Hram is living a double life. A Covenant Keeper, he hunts rogue feeders. The US-based Project Purple knows all about the Covenant and is seeking to unmask it. Is there a way to integrate feeders into mainstream society? Can Frank Hram survive betrayal by someone he loves?