In Year 40 of I.O.N, the city of Ionopolis led and created by Dr. Mayson, a revolutionary scientist, was the only surviving nation in the Western Hemisphere after the Great Catastrophe in Year 2018 A.D. The city of 12,000 Ioniacs created from the remnants of the human genetics pools in the Western Hemisphere and engineered with advanced ionization and human cloning technology, know no pain, hunger, anger and death. There was peace in Ionopolis for decades even as the memories of the Ioniacs before the Ionization Age were vaguely destroyed by the disaster. When the existence of Ionopolis was threatened by the human race residing at the other side of the globe, Dr. Mayson, together with his ardent weaponry designer Green, set to put an end to the rising tension between the two hemispheres. The Eastern Hemisphere was dominated by the three powers of Tripyro which ruled the surviving human race with an iron fist, encasing their kingdom with harsh policing, regressing the civilization back into caste system and genetic control. Green, entrusted to bring back Dr. Mayson's son who he was separated from before the Great Catastrophe from the City of Scion, the stronghold of Tripyro. Embarking on an epic sacrificial journey to the Eastern Hemisphere and deprived of her memory from her past, Green released an A.I which brought her closer to her real identity and Dr. Mayson's son. Plagued with fear and suspicion and the clock ticking away at the commencement of a war between the two nations, Green took on the mission as the Guardian who was to bring Dr. Mayson's son back to Ionopolis at all cost.