Arya kills Dany wearing a face mask of Melisandre?
Arya kills Grey Worm and takes his face and kills Dany.
The dragon will not execute Jon Starkaryen as it can smell his dragon blood. Jon drives his blade through Dany. Grey Worm kills Jon, Arya kills Grey Worm, Drogon kills Arya, Bran wargs into Drogon, Immolates the unsullied, flies north and enthrones Sansa.
Joffrey wakes up in his bed one day, ahhh it was all a dream.
A flash mob doing the thriller dance breaks out among the unsullied and Dany rides her dragon away in disgust, I think it's only mentioned in the books that she dislikes Michael Jackson.