Marinette (Nessy) is half vampire and half human. She flees her maker Hervidor, the strongest of their kind and the ruler of the underworld of vampires who has kept Nessy locked away for centuries.
Nessy flees to be able to live her life as she chooses where she meets and quickly falls in love with Charles.
With the threat of Hervidor constantly at her heels, Nessy takes the final decision to stand and face him in the fight that will decide her fate.