Everypony knows that Celestia sealed Luna in the moon.

But what if she took it a step further, and flooded all of Equestria to seal off all the evils of the ancient world forever?

Join Twilight Sparkle and her friends as they journey the Equestrian Sea, in search of the Elements of Harmony in the attempt to stop the resurrection of the dreaded Nightmare Moon.

(NOTE: I might need a good picture for this one that's a little more creative than what I usually just grab from the internets!)