After enlisting the reluctant help of a Union scientist with unique knowledge of the Aterniens, Master Commander Carter Rose embarks on his most dangerous mission yet. Ahead of them is Old Aternus, a dark and inhospitable world where the Aterniens were exiled to after the first war. Now, abandoned, Old Aternus holds the key to discovering the secret location of the Empire's new home planet, and the chance to finally strike the Aterniens where...