Many, many generations ago, the proud Emperor issued a grand decree: the first twelve animals to cross the Sacred River and stand at his side would become the Sheng Xiao, noble beasts of highest regard. The hours and years would be named for them, and all born under their auspices would be influenced by their nature. The race was won by mighty and sometimes surprising creatures, and they held dominion over the Earth for centuries.
However, this blissful balance was doomed. Rebel Beasts broke the Orrery, the great spinning wheel that maintained the balance of the world, and the Sheng Xiao's rule. This once beautiful system did the only thing it could to repair itself: it restarted the race. With every passing moon, another beast is erased from the shattered Orrery. When the twelfth moon reaches fullness, the Sacred River will reappear, and the first dozen beasts to cross it gain power over the wills of men.
The leaders of the Rebel Beasts gather their strength, trying to create the perfect dark Sheng Xiao. Many of the original beasts have been lost to time, but hope is saved. Jinzo, the last guardian of the Emperor's Palace, uses his magick to transform the essences of five of the Sheng Xiao into powerful devices, the Seiza Changers. He sends these objects to Earth, into the hands of a group of teenagers who personify the ideals of the Sacred Beasts. It is up to them to reestablish order in the universe and win the ultimate race.
As I said before, I'm guessing you can figure out my theme easily enough. I'm keeping the team name under wraps for now, but I had the helmets and enough of the suits done to share this teaser. I hope it tantalizes...