When a mysterious entity suddenly appears in the center of Tokyo, the Alta Mira Agency is tasked to repel the extraterrestrial threat. Otsuya Funagai must guide his all-female unit of "Battle Sole" pilots to take down the strange being no matter the cost. However, his intimate relationship with one of the pilots, Rin Ichikawa, may spell trouble for the team and the mission itself.

In the year 2050 A.D, approximately 1/10th of Japan is now under water due to the global warming effect. The city of Tokyo was no exception. The economy of Japan is crippled from this disaster and the government is willing for anything to help revive the country. As a result, the Japanese government forms "JESAS", a military foundation that has evil intentions of controlling Japan's future. JESAS handles the dumping of nuclear wastes into outer space. To insure their protection from other countries, JESAS has developed "R.B." Robotic Weaponry, which is controlled by pilots with "A.I. (Accurate Intuition)". On the opposite side of the law is the "Green Frontier", a united protection agency that was formed by countries sharing the same beliefs, to save the Earth. Featuring JESAS pilots Kanna and Kazuto and Green Frontier's Doota Kang and Mira Yu, these four youngsters will decide the fate of the Earth through love, friendship and the passion for their duty. (Source: AniDB)