Many millennia ago, a highly advanced civilization flourished on earth. At the extreme of luxury, the human race decided to venture into space. The audacious project met with hostility from the Astral Allies. With nothing in common, total war broke out between the two sides. The earthly civilization was completely defeated and forever consigned to oblivion, leaving no trace of its existence to its successors.
The present day. A different civilization has been rebuilt on earth and appears to peacefully enjoy its prosperity. Unbeknownst to humankind, however, the Astral Allies are plotting another invasion of the Earth.
Only twelve people possess the keys to save the earth. Belonging to the four water tribes of Fire, Wind, Earth and Water, they have the power to mobilize the Gransazers, ultimate battle suits developed by the ancient civilization that were never actually used. Gradually, they are awakened to their sacred mission and decide to join forces to order to save us from annihilation again!
Subtitles: English (Hardsub, from 09-51)