Every 1000 years, all the Gods of the world gather in heaven to attend the “Conference of Mankind Survival”.
Will humans surpass Gods and make an stop to the ultimate end?
All the Gods agree to bring an ultimate end to the mankind due to their past foolish acts but before the final verdict is made, Brunhild, the eldest of the 13 Valkyrie sisters make and objection.
Therefore, Brunhild and her sisters must choose 13 of the strongest champions throughout the human history.