1. Dragonborn dies in a accident 5 years after skyrim
2. The Dragonborn never truly helped out any side in skyrim, all he did was made the temporary alliance pact between the imperials and the stormcloaks at the greybread HQ, Eventually they both made a peace treaty.
3. The Empire with the help of the redguards and stormcloaks finally defeats the thalmor in the second great war 60 years after skyrim.
4. As the decades passes, all the human factions eventually went to war with each other, destroying the empire in the process. The new human rulers are now bretons and high rock has become a very powerful nation.
5. 100 years after skyrim, the Hist called 90% of all argonian for a meeting but something happened to the hist tree and 90% of all argonians died with a heart attack. Black Marsh was also broken apart by unknown earthquakes. After that khajiits invaded from the west while the dark elves invaded from the north, killing even more argonians.
6. 104 years later the Nerevarine returns from Akavir but he was ambushed by cutthroats and highwaymans......he did not survive the ambush, he had mutiple stab wounds and his throat was slit, After that apparently someone else attacked him.