Darth Sidious, troubled by Ventress's growing progress with the dark side of the Force, commands Count Dooku to eliminate her. When Ventress survives Dooku's assassination attempt, the jilted former apprentice vows to take revenge, enlisting her kinswomen – the Nightsisters of Dathomir – in her scheme.

Anakin and Obi-Wan, sent to track down the mysterious figure behind the deaths of several Jedi, soon find themselves on the trail of the monstrous apprentice that Ventress has created: Savage Opress, who has been trained in the ways of the Sith by Dooku.