Plot
Shortly after the events of the first game, Rayne finds Brimstone headquarters personally sieged by her father, the vampire overlord Kagan. As Rayne confronts Kagan, the latter is torturing Professor Germain, a father figure within Brimstone who helped save Rayne as a child. Kagan reveals that Brimstone is holding the Vesper Shard, believing it can be weaponized against vampires. As Kagan gloats, Germain makes Rayne run, setting off an explosion seemingly killing Kagan. Denied the pleasure of killing Kagan herself, Rayne vows to destroy Kagan's legacy by killing the cult of his children [5] .
Decades later, Rayne's quest to exterminate Kagan's remaining followers brings her to a city where the last of his children are operating. The Cult of Kagan are led by Rayne's vampiric half-sibling; her sisters, the ambitious Ephemera and the arrogant Ferrill; and her sycophantic brother, Xerxes. Rayne infiltrates a party hosted by one of her half brothers, Zerenksi, who lures the city's leaders and elites to be massacred. After Rayne kills Zerenski, she and her handler Severin observe numerous abductions across the cities as increasing vampire attacks are becoming more public and audacious.
During one such attack, Rayne encounters and briefly fights Ephemera. Reaching the city's sewer system, she faces Slezz, a towering vampiric monstrosity the cult uses to breed monstrous children. After killing Slezz, Rayne soon infiltrates a factory run by the cult, attempting to harness the Vesper Shroud, a substance that can render sun rays harmless to vampires, allowing them to surface at all times of the day, and which twists nature into a nightmarish perversion [5] . Using the Shroud, the Cult has pledged to create a new era of vampiric supremacy, continuing Kagan's legacy, using abduction victims as "fuel" for the shroud.
On the factory's tower, Rayne faces Ferill, and despite her efforts, is incapacitated by debris. During which, it is revealed Kagan is still alive in the present day, operating behind the scenes and is now coming out of hiding. Unaware of Rayne's presence, Kagan blames Ferrill for the factory's disruption; it turns out Ephemera never told Kagan of Rayne so that Ferrill would lose face with him. As Kagan has Ferrill thrown off the tower to her supposed death, Kagan soon has the shroud activated; blotting out the sun, sending vampires and monsters to run amok in the city. Despite this, Rayne is almost ecstatic with the chance of finally facing Kagan.
Cut off from Brimstone, Rayne makes her way throughout the ruined city, fighting through Kagan's forces. Rayn soon confronts Ephemera, who reveals her intent on killing an usurping Kagan. However, Rayne manages to kill Ephemera herself in the ensuing fight. Later, Rayne discovers Ferrill has survived, who is rallying a sect of the cult to go to war as revenge against Kagan. As Ferrill leads her assault on Kagan's tower, Rayne uses the attack to infiltrate it. There, Ferrill is killed by Xerxes, using his invention, the Sun Gun. Xerxes dons a battle suit to fight Rayne, but is ultimately killed.
With only Kagan left, Rayne confronts him in his throne room. Recognizing the trouble Rayne caused him, Kagan bemoans the "effort it took" to create her, before finally facing Rayne in battle. Despite Kagan being empowered by the Vesper shard, Rayne manages to defeat and decapitate Kagan. Despite Kagan's death, the shroud remains, along with his vampire apocalypse. Rayne is informed by Severin that Brimstone has recovered, but has declared martial law and is cracking down on any vampire or related beings; including Rayne and Severin. Not only that, but other vampire lords are coming to claim Kagan's kingdom. At Severin's suggestion, Rayne takes Kagan's spot as "Empress" to continue her fight for humanity.
