Season 1 of Netflix's Castlevania: Nocturne has a slew of bombshells and unanticipated turns unravel as Richter Belmont and his crew try to stop the evil vampire, Erzsebet Báthory. Deeming herself the Vampire Messiah, this vicious queen tries to enact an apocalyptic plan in Machecoul. Her plan is to create infinite darkness by blotting out the sun permanently.
Source:https://www.cbr.com/castlevania-nocturne-confusing-arcs/