In the South Pole, a top-secret meeting is held between the Earth Federation Government and an alien race dubbed the Guests. But negotiations are shattered when a scientific organization goes on the offensive, attacking the aliens in the name of humanity and declaring themselves the Divine Crusaders. The fight for the Earth sphere has begun, and along with new teammate Raidiese F. Branstein, Ryusei and Aya will be forced to turn weapons against former allies in an all-out battle—the Divine Wars!