Twilight Sparkle was not the 'pony'. Instead she was a spy who was sent by her mother, Queen Chrysalis to actualize her will, conquer Equestria. Will her daughter success or betray her trust?

An unknown creature caught Aquestria's ruler, Twilight attention

After a problem in the Royal Wedding, Twilight was abandoned from Equestria and had to made a choice to survive whether she wanted or not