Still, some threats exist outside of time. Centuries ago, a group of heroes banded together like the Avengers of an ancient era to battle the Zodiac, an enemy possessed of unimaginable energies channeled by a mysterious Key. As a result of the battle, a large part of the planet was devastated. The Key has been lost, and the Zodiac lurks, influencing world events from the shadows, waiting for the stars to align in the right order to herald its return. When strange creatures with the powers of twelve astrological signs reappear in the 21st century, the Avengers are ready to fight them back . But the modern team of heroes is forced to split up, and each clash with the enemy only increases the threat of defeat. The hunt for the Key of Extermination awaits them...