Serah struggled with her emotions and resolve when she hears a voice " do not give up , continue fighting in what you believe in and pass this trial you are my sister.. "
Serah looks up and sees a ghostly , ethereal vision of her brother he then gives her a hand and pulls Serah to her feet. Seeing her brother has given Serah newfound strength and she then gets to her feet while Carbuncle runs toward them and jumps landing on Serah's shoulder. Noctis then pets the small creature.
" Take care of my sister " before turning back to Serah " you ready ? "
" Yes "

Serah then gets up and Carbuncle jumps and turns itself into a bowsword for her to use. Because Noctis is in his ethereal form he is forced to use that ability four weapons then surround him. Noctis then launches the weapons at the giant wolf one of them hits it in the eye while the other 3 cuts into its arm but the wolf was unfazed.
He curses under his breath thinking ( " this form must had made Armiger Arsenal weaker then usual normally it would had been able to kill monsters " )

Back at the inn at Lestallum Noctis' friends watch him with concern. Iris then enters the room and sees Noctis unconscious on the bed surprised she asks the group " what happened to him ? "
Gladiolus looks down at his friend " I don't know he just complained of a headache when we got here and next thing you know he collapsed. "

Serah and Noctis continues to struggle with the demon wolf Fenrir , learning that they must do this together Serah then casts Blizzard while Noctis blows off its arm with Armiger Arsenal by combining it with Ultima Arrow. Serah fires an arrow into the air and it exploding into light as it returns to earth, consuming the area directly in front of its shooter. The combined attack of Serah and Noctis brings down Fenrir. The demon wolf seemingly convinced of Serah's strength forms a pact with her.
Serah then falls to the ground tired from the battle , Noctis then hugs her " I have to go now we will meet again , just remember when ever you need me or lose your way Carbuncle will lead the way back to the light. "
With that said Noctis' spirit then vanishes and he awakens back at the inn at Lestallum under the watchful eye of his friends.
" Hey Noct , you ok ?...what happened ? "

Noctis then sits up confused ( " what was that ? ...a dream ? " ) and looks at his friends " I am ok there is nothing to worry about , we should continue to Altissia. "
Gladiolus responds " no you are in no condition to go anywhere what if you black out again , besides its getting late and danger lurks at night "

Noctis then reluctantly agrees and then asks Iris what happened while they were away , Iris then responds that the Amicitia family butler, Jared Huster, was killed defending her from the imperials. His grandson Talcott was traumatized by this event. Noctis then expresses his sorrow for his loss.
" anyways I think you all should rest , you all got a big day tomorrow " Iris then responds. During the night, Noctis dreams of following Luna's dog Pryna while encountering various terrors.

In the dawn of the next day Serah sets out again guided by the Astral Carbuncle to the next Astral Phoenix the eternal, undying bird. After forming a pact she is then guided to the last Astral Madeen the winged lion. The Astrals then tell Serah that Noctis is heading for Altissia. Using the demon wolf's power she gets there quickly.

The people of Altissia are relatively peaceful and have been long uninvolved in the global conflict. To this end, its leader is cautious to grant Lunafreya succor, and is opposed to allowing her to commune with their patron sea goddess, Leviathan, after the destruction that awakening Titan brought to Lucis.
Noctis must convince her to allow Lunafreya to go through with the ritual, making conversation choices befitting of a king. To invoke Leviathan, they keep a sacred trident that they allow Lunafreya to use in the ritual of communion. However, the empire assaults the city as Leviathan is summoned, angering the astral to the point of Lunafreya being unable to speak sense to her.
Leviathan then goes on a vicious rampage during which the city is rocked by surging waves and imperial forces. Carbuncle then talks to Serah " Noctis and Leviathan need help we must go to their aid quickly "

Serah knowing that summoning Phoenix will take a lot of her strength but she does it anyways holding up a phoenix Pinion " Great Beast of the sky, Please hear my cry come to me the eternal undying bird "
A red light then shot out at the sky , then soon after a red bird descends " you call me ? "
" Yes , take me to Luna "

The phoenix then scoops up Serah and takes flight heading to the location of Noctis and Lunafreya. Serah spots Ardyn near Lunafreya. She forgives him and promises to forgive him for his transgressions as well as pass the ring to the true king. Ardyn then stabs Lunafreya with a dagger telling her to remind him of the crystal.
Ardun then calls out to Noctis " Oh prince , your bride awaits "
In order to halt Leviathan's rampage , Lunafreya summons the power of the kings of old to aid Noctis in stopping the sea goddess and collapses soon after. Serah then commands the phoenix to go to Lunafreya. Noctis using the power of the kings of old was not able to defeat the goddess of the tides and was only able to wound her.

Leviathan attacks again , Lunafaya then shields Noctis , at this point Serah dons the ring she held and jumps off of phoenix " protect and save everyone. " Serah now fused with the Astral charges into the tidal wave , breaking it then engulfing the area in a bright light. Lunafaya , Noctis and Serah are then transported to another dimension.