Selene is paralysed and her blood is drained, Semira intends to drink it to steal her power. But Semira has Varga (Bradley James), her ally and lover, poison Selene and slaughter the trainees, framing Selene for the atrocity. They grant it and send word to Selene who comes and trains the aspiring Death Dealers.
At the same time, fiercely ambitious vampire Semira (Lara Pulver) tells Thomas she wants Selene to be granted amnesty so that she could train new Death Dealers to deal with the Lycans. The Lycans attempt to capture Selene, but after defeating most of those sent in a fight, she spares one and tells him to tell Marius that she does not know where her daughter is, as she has cut ties with her. In between the fighting, Marius is searching for Selene's hybrid daughter, as her blood is key to defeating the Vampires once and for all. Her only allies are her protégé and Vampire hybrid David (Theo James) and his father Thomas (Charles Dance). Vampire death dealer Selene (Kate Beckinsale) is fighting both sides, as she betrayed her own kind. Basically, the war between the Vampires and the Lycans wages on, with the Lycans, led by Marius (Tobias Menzies) close to defeating the Vampires. The Underworld movies have been a mixed bag over the years, the original was adequate, Evolution was boring, Rise of the Lycans was okay, and Awakening was silly, so I had pretty low expectations about this fifth film in the franchise. Leaves it open for at least a few more episodes as this appears to be a bridging film which promises what this one missed. The plot tries to be clever, and maybe it was. It is a twisted tale with betrayal and let's add a new element just as I am getting the old plot sorted out.
Of course these films are never just vampires vs werewolves, oh excuse me, Lycans, with me selling silver bullets to both sides. Selene is granted amnesty by the Vampires (she killed Victor in a previous movie) in order to train new recruits for the up and coming battle. I still don't fully understand the blood doping rules, or how memory is retained in the blood, but I just went with it. They want the blood of the hybrid Eve, daughter of Selene so they can be strong and win. The werewolves who are called Lycans because that sounds more sophisticated, are planning a major attack at the Vampire fortress. The film opens with outcast death dealer Selene (Kate Beckinsale) catching us up with a few sentences with the rest following. Title (Brazil): "Anjos da Noite: Guerras de Sangue" ("Angels of the Night: Blood Wars") Fans will certainly love this film and look forward to see the next story. The viewer must be aware of details from the previous films (the best thing to do is to see them all again) since the plot is developed in fast pace and there is a ellipsis in the beginning of the story. Who will win the fight? "Underworld: Blood Wars" is the fifth chapter of the Underworld franchise, with a story full of action, betrayals and battles. When the sanctuary is invaded by Marius and the Lycans, Selene fights Marius that wants to know Eve's whereabouts. They have to flee to seek shelter at the Nordic Coven Vador where David learns the truth about his mother. He succeeds, but Selene and David are betrayed by Semira and her lover Vargas (Bradley James) and David witnesses Semira killing his father. Meanwhile, the ambitious vampire Semira (Lara Pulver) convinces David's father Thomas (Charles Dance) to plead to Cassius (James Faulkner) and the council of their coven to forgive the skilled Selene to train the new Death Dealers. Out of the blue, she is attacked by Lycans but David (Theo James) helps her but is wounded. The outcast Selene (Kate Beckinsale) is hunted down by the Lycans led by the powerful Marius (Tobias Menzies) that wants her daughter Eve and by the vampires seeking revenge for the death of Viktor and Marcus.