For centuries, the Aobians of the Great Tree have shared the continent, Q'ara, with humanity. War has come and gone, and tensions for true rulership are beginning to rise once more.

In Aobia, Sleepers share a symbiotic relationship with the Tree in which they live, empowered by Luminosity, the Tree's predominant blessing upon a select few people. Elsewhere on Q'ara, an unknown organisation seek to weaponise Luminosity for their own purposes.

Meanwhile, Drift, a young Aobian who feels cynical towards the mysterious inner workings of his people's government, is exiled from Aobia - forever. Traversing the land of humans below, he must find his purpose in an ever-changing world, while his betrothed back home, Tarri, seeks to do the same.