In the official trailer for Underworld: Blood Wars, we see Selene (Kate Beckinsale) drape herself in a black coat and gracefully jump off the edge of a cliff as her voice plays over dark, ominous imagery, saying, "The vampire and lycan clans have been at war for centuries, turning our world into a battlefield."
Fast-moving, action-packed sequences then take over, as we see Selene in combat and learn that a new war is being waged. With her loved ones dead after being hunted down by enemies, her involvement in the war is personal. David (Theo James) enters the picture as he informs Selene that a new leader is directing the lycan clan and her own blood is a hot commodity.