The Underworld Quadrilogy, consisting of Underworld (2003), Underworld: Evolution (2006), Underworld: Rise of the Lycans (2009), and Underworld: Awakening (2012), immerses viewers in a dark world of vampires and werewolves. The saga follows Selene, a vampire warrior, as she battles the Lycans (werewolves) in a centuries-old conflict. Underworld explores betrayal, revenge, and forbidden love. Evolution reveals deeper secrets about the vampire and Lycan history, while Rise of the Lycans is a prequel detailing the origins of the war. Awakening brings new threats and alliances, pushing Selene’s resolve to protect humanity.