After a thousand years of unchallenged rule, a humbled Princess Celestia - now called Tia Sunbeam - must face her ultimate challenge. To live life as a normal pony, and make some friends.
For a thousand years, the Code of Harmony has ruled Equestria, and the Code of Dissonance has sabotaged its works at every turn. Now the war for control over the land will come to a head, and one unicorn's decision may decide the fate of all.