Viviana loves her man Bartolomeo, who does not love her as much any more. This tense tale of love and blood takes place in 18th century Venice, where Viviana and Bartolomeo dwell in a mansion with their five brethren; their coven of Vampires. As Bartolomeo's mistress, Viviana presides over the coven, but when a new girl, Nicoletta, joins the family and begins to challenge her, Viviana finds herself fighting both to assert her place and to regain Bartolomeo's love.