Japan, including Tokyo, had been submerged by about 10% due to global warming by 2050 A.D. The country's economy was devastated by the aftermath, prompting the government to establish "JESAS," a military organization with malevolent intentions to control Japan's future. JESAS oversaw the disposal of nuclear waste in outer space and utilized "R.B." Robotic Weaponry operated by pilots with "A.I." or Accurate Intuition to safeguard against foreign threats. However, countries with similar ideologies formed the "Green Frontier" to defend the planet against JESAS. The narrative focuses on Kanna and Kazuto, JESAS pilots, and Doota Kang and Mira Yu, members of the Green Frontier. The fate of the planet hangs in the balance as love, friendship, and a sense of duty come into play.