When monstrous threats plague Mount Nibel's reactor, the Shinra Electric Power Company deploys its elite unit, SOLDIER, led by the famed Sephiroth, to investigate. Tasked with assessing the reactor's state alongside Zack Fair, another SOLDIER First Class, Sephiroth unravels the mysteries of the Mako reactor in Nibelheim. As time passes, Zack, once a celebrated hero, finds himself on the run from the Shinra Electric Power Company's notorious Turks, as they aim to conceal the dangerous truths that bind them.