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.