Darth Vader survives the events of "Return of the Jedi" and joins the Rebellion, bringing a large portion of the Imperial fleet along with him. As the Rebellion struggles to come to terms with its former Imperials, Vader and his children face the challenge of coming to terms with each other. Romance develops between a leader of the Alliance and one of Vader's leading officers, but a traitor puts all of the New Alliance at risk. Meanwhile, the Emperor has his own plans for Vader and his children. When Luke and Leia are captured by the Emperor, Darth Vader, Han Solo and Chewbacca set out on the Millennium Falcon to rescue them.