In a world where gods walk among humans, the realm of Eos plunges into darkness as sinister daemons ravage the land with unstoppable force, bringing calamity upon mankind. Amidst this chaos, the noble House Caelum rises to power due to their divine ability to heal and protect against the daemon scourge. With the realm in need of a new leader, the gods look to the Caelum bloodline to fill the void. The competition for the throne unfolds between the ambitious and charismatic Somnus Lucis Caelum and his modest and altruistic brother, Ardyn Lucis Caelum. As the brothers clash in a battle for supremacy, the fate of the world hangs in the balance, awaiting the triumph of one to shape the course of history.