We see Gadriel Dovahkiin walking through a portal, returning from sovngarde after slaying Alduin The World Eater. Gadriel has a feeling of great accomplishment after defeating Alduin but also a sense of great longing as now he has defeated Alduin what left is there for him to do? He has completed his destiny and saved the world but now that he has done that he wonders if there is more to his life than just being the Dragonborn. What do I do now? I have completed my purpose in life but I still have a long way to go until I die. Most people don't know what there purpose in life is from the moment they are born to the day they die, but there is a strange sense of fulfilment in that as they get to discover and create their own purpose which gives them a reason to live, to push forward in life and discover what they were meant to do. But the Dragonborn is different, as soon as he was born he was destined to do one thing, to slay Alduin or die trying but now that he has done so at the young age of 22 he wonders what to do with the rest of his life as he no longer has a purpose.
Gadriel's thought get suddenly interrupted by a blinding flash of light as he receives a vision from Akatosh the dragon god of time. In this vision he sees the sky go black with oceans of blood and fire falling from the sky, he also sees the Daedra and Aedra fighting with themselves as well as each other for his soul. They are fighting because he had made so many deals and pacts with them that nobody knows for sure who gets his soul so they decided that they would get his soul by any means possible. (they want his soul so badly because it has fused with hundreds if not thousands of dragons plus Alduin. They each realize that whoever holds his soul will be able to interact with the world however they want and bend it to their will.
Gadriel is having a hard time processing all of this information when he suddenly hears a voice inside his head, Gadriel the last Dragonborn. I have sent you a vision of what is to come, I can't let this happen as it would mean not just the end of this world but also the end of many others as well. So I must send your soul and body far away to where no one, not even me can reach you. I know that this must be hard right now but it is the only option I have. But before I send you away I will let you say goodbye to any friends and family you have. Please meet me at the throat of the world when you are ready to leave.
Gadriel is feeling overwhelmed by all of this. He tries to process it the best he can and know he must say goodbye to all his precious family and friends he has made. He heads to Castle Volkihar to say goodbye to his beloved wife Serana. He explains to her his vision and the message he got from Akatosh. Serana is at first distraught, she can't believe that her beloved husband getting ripped from her arms not long after they married but she calms down and they decide to spend the night together expressing their love for each other. (this is not smut it is supposed to be heart warming.) Gadriel wakes up in the morning and decides to go to the throat of the world, leaving his now pregnant wife in bed. I will miss you Serana and please forgive me for leaving like this, I'm afraid that if I saw you crying one more time I could never make myself leave you. Bye now and forever, my beloved Serana.
With his eyes full of tears he forces himself to leave Serana to go to the throat of the world. Gadriel travels to the throat of the world entering High Hroth Guard where he sees the Greybeards waiting in a circle. Hello Dragonborn we have been expecting your arrival as we to were sent the vision by lord Akatosh. Before we summon lord Akatosh to take you away I would like to give you the title of Greybeard. He looks to all the other Greybeards sitting standing around him and asks if anybody objects to this decision. They all shake their heads no and he turns back to the Dragonborn. Then from here on you shall have the title of greybeard. Now Dragonborn are you ready to go. Gadriel look back taking one last glance at Skyrim. He turns back the greybeards and says I'm ready. They all gather around making a circle with the Dragonborn sitting in the middle of them. All of the greybeards start to chant in the ancient tongue of the dragons summoning lord Akatosh. Akatosh appears above them all as a bright white light and he speaks, his voice filling up the room in a gently almost sad tone and looks to the Dragonborn. Are you ready to leave Gadriel, yes I am but before I do so may I make a request? You may, I wish for you to look over Serana and all of her family members and to make sure that they have a good life. If that is all Dragonborn then yes I will watch over Serana and her family.
Now Dragonborn it is time to leave he says as Gadriel starts to float up into the bright blinding light and he feels a calmness wash over him as he enters it. He feels like he is being moving somewhere by a giant hand almost as if it is guiding him. He tries to look around but he cannot see through the blinding light that seems to encompass almost everything around him. He can feel himself slowing down almost to a stop when suddenly a light brighter than anything he has ever seen flashes in his face blinding him for a few seconds as he feels himself come to a stop. He feels himself laying in a a field of grass and slowly opens his eyes looking around only to see endless grasslands and the sun set of Essos looming over him.