When Darkness Rises

...Heroes will rise as well. The Mane 6 have battled against many forces, but they may have met their match. A foe...that uses the power of Unity and 'Friendship' against them. With the Mane 6 out of action, an unlikely group of ponies, who have never met before, are brought together under a common goal; to save Equestria, using the mysterious Crystal of Harmony.