Nix has spent her whole life journeying to places both real and imagined aboard her time-traveling father's ship. And now it's finally time for her to take the helm. Her father has given up his obsession to save her mother -- and possibly erase Nix's existence -- and Nix's future lies bright before her. Until she learns that she is destined to lose the one she loves. But her relationship with Kash -- best friend, thief, charmer extraordinaire -- is only just beginning. How can she bear to lose him? How can she bear to become as adrift and alone as her father? Desperate to change her fate, Nix takes her crew to a mythical utopia to meet another Navigator who promises to teach her how to manipulate time. But everything in this utopia is constantly changing, and nothing is what it seems -- not even her relationship with Kash. Nix must grapple with whether anyone can escape her destiny, her history, her choices.