A poor maiden named Eylah and her family are scorned by the locals of their community, and they struggle to survive as a result. Eylah takes matters into her own hands to fend for herself and her family by working long, hard hours. While difficult, life is nothing short of ordinary for Eylah until one fateful day when she comes across a mystical red river; strange, inexplicable things begin happening, and secrets long buried start to come to the surface. Eylah soon learns that the fate of the world is resting on her shoulders. Is she strong enough to save mankind?