The Dark Droids arc has seen an ancient Sith weapon known as the Scourge spread its malign influence throughout the galaxy. It's turning droids against their organic masters and leading to a wave of murder across numerous worlds. And now it has its eyes set on the jewel in the Empire's crown: the planet Coruscant.
The Scourge has already tried to possess Darth Vader - himself a cyborg - but he has a more immediate problems in the form of his rival, Mas Amedda, who tried to assassinate him. Now, in Star Wars: Darth Vader #40, the Dark Lord of the Sith is out for revenge and that means confronting Amedda - and Emperor Palpatine himself.
