A.S. 216. Climate change and chaotic world events have caused drastic changes to the world map, Resulting in massive exoduses, food shortages, and a severe energy crisis. Amid this disaster, "humanoids" emerged. Humanoids possess a function that other robots do not. A system that could "transform proteins created by the human body into energy"—

The evolution of humanoids has been extraordinary. They improved day by day, and soon took up positions in various fields. Special Organization Ord -the security institution established in association with the military, the police, and civilians. The Organization has allowed a humanoid to be recruited into their ranks. The name of that recruit is "Walter".

Walter and his companions must face the many challenges within the floating city of KANTO. In a turbulent world, how will the story of "humans" and "humanoids" unfold—