It's been nine years since the formation of the Empire, and on a mission gone wrong, Vader and Ahsoka find themselves trapped. Prisoners of the Empire, their fate remains uncertain. Their only hope is that Custos, Obi-Wan, and Anakin will be able to find them before it's too late. But Sidious has long been waiting for this moment, and he has no intention of letting Vader go.
When Obi-Wan goes to confront Vader to lead him away from the escaping transport ship, he comes face-to-face with some bitter, horrifying truths. Vader is not free. Anakin has never been free, even after he left Tatooine, or at least he has never believed himself to be free. What does one do when the child they raised and trained and loved believes you to be his slaver?