Alduin has been silenced, the Volkihar destroyed, the dragons routed and the rebellion crushed. With no more enemies, the province of Skyrim is set to turn on itself, refusing to see the true threat brewing to their east. One has seen it. The First Dragonborn, making his return. A Prince at his head, a tide of Daedra at his back. The others must be made to do so as well. The Last Dragonborn must unite the disparate forces of Skyrim into the wall against which this darkness breaks. Pray he succeeds and that he does not fall to his own tyrannical nature in the process, becoming the very monster he wanted to destroy.
Don't act so surprised. You were warned to beware...
The opening song and Felwinter's first theme is "Legend Has It" by Run the Jewels