It’s 2041 A.D. and extraterrestrial robots are invading the solar system to extinguish all existing life. Amidst the chaos, Eiji goes looking for his missing sister…on an army base of the wealthy Klein Sandman, creator of a secret army and a gravity-powered robot named Gravion designed to fight back. Now Eiji has a dilemma: piloting Gravion to protect Earth may mean never seeing his sister again.
