Set along a backdrop of a fictitious second world war at an international city in Asia.
In Japan, Lieutenant Colonel Yuki recommends the creation of spy training school "D Kikan". Meanwhile, Kato is facing capital punishment for his refusal to follow a superior's order. Kato is then scouted by "D Kikan". He goes through a harsh training regiment and faces his first mission as a spy.
In order to seize American ambassador
