In the forty years since the Vagantur landed on Faloiv, the planet has existed in a tenuous peace between the humans who live in the enclosed community of N’Terra and the Faloii, the indigenous population. But after uncovering the shadowy secrets of the Council’s newly elected leader and helping a kidnapped Faloii man escape, sixteen-year-old Octavia knows that conflict is looming. Her discovery of a separate population of humans—including her grandparents—only serves to show her how out of touch humans are with reality on Faloiv. Then the Faloii discover the N’Terran’s latest experiment: an artificially weaponized creature, and Octavia realizes that it’s up to her to prevent her people from causing any further destruction. More determined than ever, Octavia and her friends set out to understand the scope of humanity’s history. However, nothing can prepare them for the full weight of what they discover about both their home on Faloiv and the Origin planet. And as she learns to control her ability to communicate through the Artery, the network that connects everything on Faloiv, Octavia must act to change her people’s future before the natural balance on the planet shifts forever.