One fateful day, a mysterious place called the “Abyss,” which is full of celestials and monsters, appeared on Earth. These celestials from the Abyss required the faith of believers to maintain their power, making Earth and its great population a jackpot for them. Unfortunately, among the good celestials who handed out blessings to humans in return for their faith, there were evil celestials who preferred to use more powerful means to just take over Earth.