The film stars Kate Beckinsale, Stephen Rea, Michael Ealy, Theo James, India Eisley, and Charles Dance.

A program to study and potentially harness their powers soon escalates into an all-out genocide and shortly after the Purge begins, Selene and Michael are captured by humans.

Despite her hybrid nature, the girl's bite wound does not heal and she is rapidly growing weaker, so David decides to take the pair to his coven.

But as they do not feel welcome in the coven, due to the fact that the girl is noticeably different from Vampires, Lycans and even Hybrid, Selene prepares to leave.

Selene joins the fight and kills many Lycans before being knocked unconscious by a huge "Super-Lycan" that heals instantly and is not affected by silver.

She tricks him into returning to his more vulnerable human form by hiding in a narrow tunnel and kills him by implanting a silver grenade in his stomach.

One of the credited writers, J. Michael Straczynski, wrote his version in September 2010, right when Kate Beckinsale officially signed on to star in the film.

Despite it already going through a number of writers and different versions, the film began principal photography without a finished script in March 2011 at Simon Fraser University in Vancouver, British Columbia.

Due to all the changes made on the script, much of the first promotional material was based on earlier storylines, which is why it includes some differences.

Måns Mårlind and Björn Stein said in interviews that while the story for the film was good, nobody was "super happy" about the script.

Mårlind and Stein also ended up working on script re-writes, along with Wiseman, producer Gary Lucchesi and another new screenwriter, but none of them were credited in the film.

Wiseman, who was working on the remake of Total Recall at the same time, was often called for help, and sometimes he would have to re-write a scene the night before it was filmed.

The latter part of this scene was still kept in the January and February 2011 revised drafts of the script but in the film this was changed so her original outfit is kept in the same room she escapes from.

Due to the unfinished and changing script, second unit director and visual effects supervisor James McQuaide faced difficulty designing some of the characters.

storyboards for the film by Martin Bergquist also reveal how entire scenes including some action sequences were fully planned but ended up being cut.

Most of the songs were remixed by Danny Lohner and use work from the bands Evanescence, Linkin Park, The Cure, Lacuna Coil and Aesthetic Perfection amongst others.

The site's consensus reads, "There's more vapid action and less story in Underworld: Awakening than previous installments, making the whole affair feel inconsequential.