Prologue
Many, many decades ago, before the time of the Hundred Year War, there was an evil agency made-up of dangerous criminals, outcasts, and people who were very power-hungry with special talents. The agency was called Agni Corporation or -as the founders called it- A.C. and had an underground school/HQ called Black Rock High to train their agents and spies. Black Rock High was built in a secret location and to assure that if someone ever found it, he or she would have to pass the complex labyrinth that surrounded the school. AC's main purpose was to take over the world and rid it of non-benders, but there were a few members that didn't approve of this monstrosity, so they fled and created their own agency to battle the forces of evil and became the founders of the Tui and La Organization (a.k.a. T.A.L.O.). Over the years, they recruited special and talented students that qualify to enter Avatar Academy, TALO's training school and Head Quarters that's disguised as a private school for rich teenagers, ultra smart geniuses, and super athletic kids.
The battle between the two agencies still continues today, but there is hope to end this long feud. There is a prophecy given by a wise, old sage. His prophecy went like this:
A silver-tongued daughter of the moon goddess
and the sly son of the refined
will put this feud behind.
Together they will harness the power of hearts,
and the battle between two enemies will slowly unwind.
Once TALO heard the prophecy, they went on the searching for a girl that had a silver tongue and a sly boy of a peaceful man. When they managed to find them and bring them together, things didn't go well. They were not the ones from the prophecy. TALO dropped the search from that point on, but is still trying to decipher the prophecy to this very day.
But in the next generation, there will be many changes and could change the fate of this rivalry forever.