Simultaneously, an evil British socialite Slayer called Lady Genevieve Savidge plots to usurp Buffy's place in the Slayer hierarchy, and a shrewd cabal of Japanese vampires scheme to reverse the global activation of Potential Slayers in "Chosen". The appearances of these villains are connected to "Twilight", the enigmatic Big Bad of the season, a masked person who views the expanded ranks of Slayers as a threat to humanity and wants to destroy them, and bring about an end to all magic on Earth. It later transpires that like Amy and Warren, Buffy's ex-boyfriend Riley Finn is also loyal to Twilight, though Riley turns out to have been Buffy's double agent.
This occurs simultaneously with a nefarious British high-society figure named Lady Genevieve Savidge concocting a scheme to supplant Buffy as the top Slayer, and a group of cunning Japanese vampires plotting to reverse the global activation of Potential Slayers in "Chosen". The appearances of these adversaries are connected to "Twilight", the enigmatic primary antagonist of the season, a masked person who perceives the increased number of Slayers as a threat to humanity and seeks to eradicate them, and bring about an end to all magic on Earth. It later becomes apparent that like Amy and Warren, Buffy's ex-boyfriend Riley Finn is also devoted to Twilight, though Riley ultimately reveals himself to be Buffy's double agent.