在一千年前，人类和恶灵互相战斗着。人类借由圣兽的帮忙，远古的百兽战士大神月磨击败了欧陆克的领袖，而且封印了他。现在，欧陆克开始复苏，五个年轻人被圣兽认定。他们一定要放弃他们的现在生命而变成新一代的牙吠连者保护地球的和平。

Two years have passed since the final battle with Sephiroth. Though Midgar, city of mako, city of prosperity, has been reduced to ruins, its people slowly but steadily walk the road to reconstruction. However, a mysterious illness called Geostigma torments them. With no cure in sight, it brings death to the afflicted, one after another, robbing the people of their fledgling hope.