The peaceful land of Equestria has not had an evil outbreak in a while now. Unfortunately all good things must come to an end as all of the pony's enemies band together to wipe Equestria off the map. The mane six find a new ally with strange powers to guide them on their quest, and soon reveals the nature of a seventh element of harmony. He also tells of a way to use the combined power of the original six with the seventh to rid the land of evil for good.