After an accident Twilight wakes up and doesn't remember any of her time in Ponyville. A few arguments later with her 'friends', She is ready to return home to Canterlot. With their friendship ripping at the seams, will friendship ever

I awoke in the Canterlot dungeon, stripped of my identity. I have no spesific memory but have general knowledge of pony life. I can't remeber my name. I have no cutie mark and no clues to who I am at all.

Twilight is woken in the middle of the night to find the pony she least exspected. Dusk Shine, her altrenate reality counterpart, and he's in pretty bad shape. He comes with a message but not for her. "Save Jubilant, Save Equestria."