In ancient times, ferocious demons slaughtered countless millions of living beings. To rid the continent of this calamity, peerless experts rose up in force and fought the demons in a bloody war! The demon slayers gave their lives without hesitation, suppressing the demons for a million years! But after a million years, the people had long forgotten the nightmare of ancient times, forgotten the heavens once drenched in blood. Now the ferocious demons have returned. Who will rise to fight? In this world stained by darkness, where cruelty, tyranny, coldness, and mercilessness reign, who will uphold our righteous cause?