Due to the influence of the Luna Rapacis, Revenants have transformed into Horrors. The order once maintained by the Revenants has already been lost, and the world is once again heading toward destruction. After the collapse of the world caused by the Resurgence, Revenants with the power to oppose the Horrors govern, maintaining order within human society. To save the world from destruction, you join forces with a Revenant who shares your mission and head into a deadly world.