After ten years trapped across the expanse of space, Captain Demora Kim and the crew aboard the Horizon are finally home. Only it's not the home they know. The Cluster, formerly a peaceful cooperative between planets, is on the verge of collapse due to a civil war.
A way to end the conflict may lie in the limitless energy that trapped the Horizon crew halfway across the galaxy and the engine they crafted to bring them home. But that means going back to the pocket of space they've only just escaped.
Demi isn't sure she's up for the task. She fulfilled her promise. She brought her crew home. Maybe it's time to walk away. However, leaving everything behind won't be as simple as she thinks. Conspiracies are afoot, loyalties will be tested, and Demi's choices could shake the foundation of the galaxy.