Lilac is part of the "Tuners", and has the power to save the Homunculi. Waking in an underground laboratory in the Lower Sector, he encounters one of these artificial life forms, heavily implicated in the tragedy that has shocked the nation. Strengthened by the pact made with this Homunculus, Lilac sets out in search of her companions and her lost memories, embarking on a journey across the boundless Vaportera.