Underworld (2003) launches the gothic action-horror saga where vampires and werewolves (Lycans) wage a secret centuries-long war. Caught in the middle is Selene (Kate Beckinsale), a vampire Death Dealer who uncovers hidden truths about the clans and her own fate. Blending horror creatures, dark fantasy mythos, and stylish action, it became a cult favorite.

Från IMDB:
Selene, a vampire warrior, is entrenched in a conflict between vampires and werewolves, while falling in love with Michael, a human who is sought by werewolves for unknown reasons.