Thousands of years ago, the ancient dragon Bahamut wreaked havoc on the land of Mistarcia, a world where gods and demons coexist with humanity. To prevent the world's destruction, the rival deities collaborated and barely managed to seal Bahamut away, agreeing to split the key between them so that the dragon would remain imprisoned for eternity. With the world safe from Bahamut's destruction, life continues as usual for bounty hunters like Favaro Leone. Living a laid-back, self-serving lifestyle, the amoral Favaro goes about his work while fleeing from fellow bounty hunter Kaisar Lidfard, a righteous man who swears vengeance upon him. However, Favaro's carefree existence is thrown into chaos when he meets Amira, a mysterious woman who holds half of the key to the world's fragile peace. Shingeki no Bahamut: Genesis tells the story of a group of unlikely heroes who find themselves caught in the middle of an epic clash between gods and demons, forced to carve their own path in the face of the imminent storm.