Reports are starting to come from a town in the north. Stories of an earth pony able to use magic. But, the pony has become corrupted by the power. It has started to use this newfound power for evil purpose. Once these reports arrive to the princess, she sends in her most loyal and powerful student, Twilight Sparkle to investigate and to convince this mysterious pony to stop and change ways. But nothing is known about this strange pony. Will Twilight be able to discover the mystery behind this mysterious pony before things get out of hand?