In a future where Japan grapples with devastating floods, Tokyo submerged beneath the rising waters, the nation's salvation hangs in the balance. Enter JESAS, a government-backed military force harboring dark ambitions to steer Japan's destiny. Tasked with launching nuclear waste into space, JESAS wields the formidable R.B. Robotic Weaponry, guided by skilled pilots with 'A.I.' prowess. Standing in opposition, the Green Frontier emerges as a coalition of like-minded nations, dedicated to safeguarding the planet. Amidst this conflict, the paths of Kanna and Kazuto from JESAS intertwine with Doota Kang and Mira Yu of the Green Frontier. Bound by love, loyalty, and a sense of duty, these young heroes hold the key to Earth's future.