In the year 2050 A.D., approximately one-tenth of Japan is submerged due to the effects of global warming. The city of Tokyo was no exception. Japan's economy is crippled by this disaster, and the government is willing to do anything to help revive the country. As a result, the Japanese government establishes "JESAS," a military foundation with evil intentions of controlling Japan's future. JESAS manages the dumping of nuclear waste into outer space. To ensure their protection from other countries, JESAS has developed "R.B." Robotic Weaponry, which is controlled by pilots possessing "A.I. (Accurate Intuition)." On the opposite side of the law stands the "Green Frontier," a united protection agency 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 their passion for duty.