Being corrupted by some evil foce, the villains had to pay for false actions. Can they defeat the evil shadow or will it live forever? Will anypony ever accept them for who they are?

King Sombra finds himself in a dreaded ice cave for a short ammount of time. He manages to get out and tries to retake the Empire. After failing and being imprisoned in his horn for three years, King Sombra is forced to be reformed.