Shio Ogura -Easy Japanese schoolgirl. Having arrived in Taiwan on a school trip, she becomes a witness to the attack of monsters. The army is powerless against them, but in the heart doeth chaos appear mysterious agents governmental organization DOGOO, «Holders of E-Gene». Modern technologies allow these agents to use weapons and equipment,endowed with souls of the great historical figures. When a friend is in danger Shio, it awakens the ability to handle such a weapon - a huge machine gun, which is enclosed the spirit of the greatest military leader of Japan, Nobunaga Oda.