After years of battle against the demons that invaded, the world had changed into one where ability users ruled. Unfortunately, Vahn was among the few without, however if there was something to his worth. It was that he had the facial characteristics of the mysterious family that helped earth overcome the demons. After numerous trials, he finally gets an ability. However, "Your world is about to be destroyed, quickly clear this stage to move to the next." "What?" Unknown to the rest of the world, this new world was governed by "Stages" and "Scenarios," deadly events that must be cleared for humanity to survive. How would they survive with the little time they have left in the midst of plotting organizations to take over the world?