Following orders to relocate armored pilot Chirico Cuvie to Planet Odon, he and every other new recruit are thrust into a mock combat scenario designed to gauge their prowess. Yet this 'mock' clash turns out to be an actual purge aimed at eliminating those lacking essential skills. Chirico, wounded yet determined, survives along with only three comrades. It quickly emerges that this is not the first instance of his improbable endurance, a detail Colonel Peruzen intends to leverage. But does Chirico truly possess invincibility in the shadow of countless battles and the whispers of legends?