A dark and Gothic monster action movie, vampires and lycans, an ancient form of werewolf, are at war. While the vampires inhabit a gigantic castle that houses their ancestor's tombs, the lycans live underground in a dilapidated sewer cave. Both teams are equipped with big guns, and they are constantly innovating deadlier bullets to gain advantage over each other. On the vampire side, the leather-clad death agent Selene (Kate Beckinsale) delegates teams of vamps to attack the lycans. But when she discovers that the lycans have kidnapped a human medical student, Michael Corvin (Scott Speedman), she knows the worst is on its way. Against the orders of her superior, Kraven (Shane Brolly), who is obsessively in love with Selene, she awakens the most powerful vampire of all time, Viktor (Bill Nighy) and prepares for a massive feud against lycan leader Lucian (Michael Sheen).

Special Features:
Commentary by director Len Wiseman, writer Danny McBride, and writer-actor Kevin Grevioux
Commentary by creature designer Patrick Tatopoulos, visual effects supervisor and executive producer James McQuaide, and sound designer Claude Letessier
Theatrical trailer(s), TV spot(s)
The Making of Underworld featurette
Creature effects featurette
Stunts featurette
Sights and sound featurette
Finch music video: Worms of the Earth
Storyboard comparisons

New to this edition:

12 minutes of additional footage
11 minutes of replacement footage
Commentary by director Len Wiseman and actors Kate Beckinsale and Scott Speedman
45-minute documentary examining the history of vampires and werewolves
Cinematography featurette
Special effects featurette
Production design featurette
Outtake reel
16 Page Collectible production sketch notebook
48 Page Mini comic book