One night, an aging writer named Nick meets a tantalizing young woman at a bar, and the night that follows is the most extraordinary of his life. Propelled by uncontrollable, primordial desires, he tastes human blood for the first time and is filled with a sexual and spiritual ecstasy. His revival quickly fades, and soon Nick is yearning for another taste of the elusive rapture. There follows a descent into madness and unimaginable hell, and a pursuit of otherworldly revelation.