According to the legends of the human population, Eos was created by a race of beings that descended from a higher plane. The Astrals formed a key part in this creation process. The mysterious beings retreated from the world, while the Astrals would remain in future years, they would become recognized as a race of their own, with their own language and agendas, and a wish to protect the natural world.

In ancient times, an ancient King of Lucis was gifted by the world's gods with the Crystal, a source of great magical power. In addition to this, the Ring of the Lucii was gifted to the Caelum family, the Lucian royal line, to wield the Crystal's divine power.

The gods also left behind three shards created from Lucis' crystal the Dawn Shard hidden somewhere in Duscae only someone who bears the blood of Lucis can find , the Midlight Shard given to Accordo and the Dusk Shard given to Nifheim. With these three shards Eos was united.

Centuries now pass King Regis Lucis Caelum CXIII and Queen Aulea gives birth to a boy which they name Noctis then two years later. Aulea gets pregnant again this time to a girl they named Serah. Aulea soon passes away after her birth leaving Regis to care for his two children.
Serah was very kindhearted, forgiving, gentle, and careful person. She detests violence, saying that she wishes there was a way to solve their issues without violence. Noctis on the other hand is shy, but tries to hide it by acting cool in front of people. He is also very protective of his sister.

Everyday was the same for Noctis and Serah , daily chores , paperwork , study , sword practice. For Noctis he also finds time to spend with Serah and introduces his friends Ignis Scientia, Gladiolus Amicitia, and Prompto Argentum to her telling her if he is not around she can ask them for help. Over time she bonded to her brother's friends and they also see her as a sister.

Everything was going well until Noctis got injured in an attack by a monster. the servants who accompanied him perished while Noctis was gravely injured, but he was saved by Regis and his attendees.

In a world of dreams anything is possible. To fly into the sky , breathe underwater , fly into space , go on a adventure or live in a world that you desired. For Noctis Lucis Caelum he would find himself propelled into a world of fantasy after being critically injured in an attack that nearly claimed his life. While recovering he falls into a world of dreams and meets Carbuncle one of the Astrals , divine beings of a higher plane there are fifteen total.

Titan, the Archaean.
Ramuh, the Fulgurian.
Leviathan, the Hydraean.
Shiva, the Glacian.
Bahamut, the Draconian.
Ifrit, the Infernian.
Fenrir , the demon-wolf.
Phoenix , the eternal, undying bird.
Carbuncle , the beast with a crimson jewel
Madeen , the winged lion
Atmos , the creature of gravity
Odin , the legendary knight
Ark , the Cruise Chaser
Alexander , The ancient weapon
Ozma , The metaphysical being

Carbuncle helped Noctis escape from the dreamworld , and ever since that day he had been gifted to be able to sense the death of those around him. Added to the fact that he was also linked to the Crystal of Lucis , he had been gifted and cursed with a great power. He spend his time training and getting into trouble with his four friends and younger sister Serah the group were as close as family. Noctis's friends often shouldered the blame placed on young Serah often leading to harsh punishments from their father. Little that they know that this bond will be the most important thing in the coming future.