"Learn all about one of the most terrifying figures in the Empire, Darth Vader. Discover how the evil Sith Lord plans to defeat the rebels, once and for all"--Back cover.
"On Geonosis, Darth Vader, Aphra, Triple Zero, and BT-1 explore a droid factory, and a bounty hunter returns with news for Vader, the Emperor plans on replacing him"--Amazon.
"Darth Vader battles his replacements under the close eye of the Emperor, and later learns the identity of a certain Rebel pilot that blew up the Death Star"--Amazon.
"Darth Vader enlists Aphra, a weapons scavenger, Triple Zero, a droid that enjoys torturing people a little too much, and BT-1, a homicidal assassin droid, to help him build an army"--Amazon.