Its an au where some charaters will swap roles and others will still have there parts. Sunset and Twlight swap roles, Prince solaris amd Prince Artemis swap roles too. Read this fanfic to see

I've been really into this new mlp trend, I even drew some of the ponies that will be in the story I'm writing but you won't see them till they're relevant to the story. this story follows the Maine 6 during this outbreak, that no one knows how it started or where it came from. it's spreading quickly infecting many and striking fear in everypony. our 6 friends hope they can find a way to stop it before it kills all of Pony kind but.... will they succeed? That is the question on everyponies mind.