Chirico Cuvie, an armored trooper pilot, receives instructions to conduct training exercises on Planet Odon. During a simulated battle with fresh recruits, he assesses their capabilities, but the situation turns grim when the mock conflict transforms into an actual combat situation. Incompetent participants are removed from the unit, leaving Chirico and three companions with injuries but alive. Colonel Peruzen is fascinated by Chirico's determination and perseverance, as he has demonstrated in the past when dealing with demanding challenges. Nevertheless, the doubt lingers: is Chirico genuinely unbeatable?