As Princess Celestia takes a walk one night with Princess Luna they are confronted by a figure from their past. An angry figure, born from the disharmony that Discord caused. He and his newly created Elements of Disharmony are now out to resurrect Discord, steal his power and destroy the Harmony Princess Celestia and Luna have created. Princess Celestia now must call on not only the Mane Six but four others who helped both princesses wield the Elements of harmony as children.