Every 1,000 years, the gods from various pantheons—including Norse, Greek, Hindu, and others—gather at the Council of Valhalla to decide whether humanity deserves to continue existing. After millennia of observing human conflicts, moral decay, and environmental destruction, the gods unanimously agree that humanity has outlived its usefulness and should be eradicated. The time of Ragnarok is at hand; humanity and Gods must select 13 representatives to compete in a series of one on one fights that will decide the fate of mankind.