Nowadays, wars are frequent on Bird Star. Only those who possess powerful guardian spirits, "war spirits", can manipulate the war situation and stand above thousands of people. The father of the young Rogge possesses the strongest war spirit, but he betrayed the country, causing him and his mother to be bullied and lose their place to live. In order to wash away the humiliation and change his fate, the young boy broke into the most chaotic and terrifying evil school in the world, and fought fiercely with opponents with powerful war spirits. Can he break out of the siege?