Synopsis: Twenty-two years ago, the Kanagawa region of Japan was devastated by a major earthquake; the "Lost Ground" suffered the most serious damage. A small percentage of the inhabitants who cling to life amid the devastation are Alter Users, whose psychic abilities enable them to create mecha forms of themselves. Hot-tempered, red-haired Kazuma is a powerful Alter who defies all authority. His obstreperous attitude brings him into conflict with Ryuho, a dedicated officer in HOLY, the special police force recruited from the Alters. They command so much power, their battle reconfigures the topography of the Lost Ground.