User blog comment:Saratje/The Elder Scrolls V: Dragonborn?/@comment-3492791-20120904002027/@comment-1992639-20120904002906

Plus the Greybeards, in main quest, strongly implied that the Dragonborn's struggle with Alduin was only a dire mission and that the Dragonborn's true story was about to begin. In their words, the choices the Dragonborn would make from there on (wether evil or good) would set in stone how he or she is remembered. That's where the adventure begins.

The fight with the world eater was Alduin's story. Now might be the story of the Dragonborn, to write legend as Septim once had.