After her failure to destroy Dooku and the loss of her monstrous minion, Savage Opress, Ventress returns to the Nightsisters to be reborn -- but she has brought the war with her to the secluded planet.
Mother Talzin welcomes Ventress back into the Nightsister fold, encouraging her to discard her past as Dooku's assassin. Talzin initiates a ceremony that baptizes Ventress in the dark magicks of the Nightsisters.
Though the Nightsisters are highly skilled combatants, they are too few in number to form an army to defend themselves. Their dark magicks, however, can unleash a power to repulse the droid soldiers of the Confederacy.