At age 18 many years later Serah was married to a noble from Solheim. It was a happy occasion for the people of Insomnia. The procession winds through the streets of the city celebrateing the marrage of Serah Lucis Caelum. This is more than a marrage of convenince as the two were truely in love , in fact they seem to bestow a joyful air. With this the two nations are joined in a peaceful union.
But visions of a hopeful future fade when Solheim falls to the Niflheim Empire and continues to dominate the entire world of Eos all except Lucis kept safe from the rest of the world by Regis , a man who ages rapidly because he must use the ring to maintain the wall.
On the outskirts of Lucis, the Kingsglaive battles the combined forces of Niflheim and Tenebrae. Feigning a desire for peace, the empire infiltrates Insomnia and steals the Crown City's Crystal. During this time Serah vanished after Solheim's fall and her father announced her suicide , but in reality was a ruse.
With no one else to turn to Serah was on her own and also without proof of her lineage or friends she will be powerless but she remembered something form her studys the Dawnshard with it the Oracle , will recognize her as the heir alongside her older brother.
Serah adapts the name Audrey meaning Noble Strength as resistance is in her blood and retreats underground where she meets other war orphans Vaan , and Penelo , a thief Balthier and his partner Fran , then finally Basch and Ashe a wealthy noble. Ashe immediately recognizes Audrey calling her Lady Serah much to her dismay
" I think you are mistaken , my name is Audrey and my family is dead did you not hear the news the Lucis family is dead... " Serah responds. At this point Serah creates a group of resistance members out of the war orphans and oppressed people launching riots and attacking everything that belongs to the imperials.
At age 20, Noctis, as the heir to the Lucian throne, sets forth from his homeland to formalize the union of states through his marriage to Lady Lunafreya of the imperial province of Tenebrae. Accompanying Noctis are his friends Ignis, his royal advisor; Gladiolus, his bodyguard; and Prompto, his friend from high school. The four head toward Altissia to meet with Luna for Noctis to marry her to solidify relations between their countries as a political union despite their childhood friendship and Noctis's complicated feelings for her.
On their way across Leide, Regalia, Regis's car the party is using, breaks down. The party pushes it to the nearest service station where they meet the mechanic Cindy and her grandfather Cid. Cid recognizes Noctis due to his resemblance to Regis, and assures them the car can be fixed, but it will take time, leaving the party stranded for the time being. Though knowing Noctis is the prince Cid doesn't act respectfully, implying he doesn't think Noctis is ready to become the king. Cindy handles the repairs, and the party is left to make the money to pay her. Once the repairs are done, the party heads to the port town of Galdin Quay, where they hope to take a ferry to Altissia. However, the ferry is not running.
Noctis soon learns that Niflheim has attacked the Lucian capital of Insomnia. Both Noctis and his father are reported dead alongside Lunafreya and his sister. They turn back, but a blockade prevents them from reaching the city. They find a high vantage point to see the city from a distance, and receive a call from the marshal of the Crownsguard, Cor Leonis, as to the state of affairs.
Noctis learns that the news of the king being dead are true but his sister is still alive her apparent suicide was a ruse and now he must also find her when the time is right , as well as a quest of retrieving the legendary weapons of Lucis's past rulers. After opening the road to Duscae, Cor deems Noctis strong enough to continue on his mission without his help, and departs.
Noctis immediately wants to find her but was stopped by Gladious who reminds him of his mission and that his sister's mission is different.