The land of Mistarcia is a place where gods, demons, and humans coexist. However, the ancient dragon Bahamut wreaked havoc and destruction everywhere. To prevent further calamity, rival deities joined forces to seal Bahamut and divided the key between them. Favaro Leone, a bounty hunter, enjoys a selfish lifestyle while trying to evade Kaisar Lidfard, his fellow bounty hunter. However, everything changes when he meets Amira, a mysterious woman with half of the key to the world's fragile peace. Shingeki no Bahamut: Genesis tells the story of a group of unlikely heroes who must navigate through a conflict between the gods and demons to find a way through the storm that is looming over them.