About 2,000 years before Celestia and Luna took their thrones in Equestria, there was a very special island in the middle of the sea. On this island loomed a very important volcano. Every 5,000 years, this volcano erupted and spread it's ashes over all the land. The ashes would seep into to ground and rejuvenate it, causing farms to produce their most bountiful crops ever. Because of how special this volcano was, a tribe of Pegasus ponies and unicorns were tasked with its safety.

One fateful day, an evil unicorn named Kane tried to destroy the volcano. The pegasi and the unicorns fought with all their might, but all had fallen at the hooves of Kane. All but one Pegasus and the most powerful unicorn on the island. The unicorn, with the last bit of his strength and his magic, was able to cast a protective barrier around the island. The force of the barrier activating was strong enough to throw Kane clear across the sea.

The unicorn turned to the last surviving Pegasus. "My dear Aqua Monsoon, you must conjure up the most powerful storm you have ever created and have it surround the island."

Aqua Monsoon, crouching behind a bush, shakenly replied, "B-but I c-can't. Kane will come back and destroy it and the barrier."

"Young one, you must. You have more power than you think. The barrier will hold. I promise."

Aqua Monsoon starred at him for a moment, then conjured up the courage to create the storm. Once she was finished, she landed next to the unicorn who was now laying on the ground. With his dying breath, he whispered something into her ear. "The barrier will allow you to live forever so you can protect the sacred volcano. You are it's protector now." And with that, she was all alone.