A large passenger plane crashed. The only survivor is the commander-in-chief of the whole army of the National Security Bureau. However, Yumiko, who was waiting for the return of her daughter Kinuko and Koichi, also known as Babil II, doubts that he seems to be a different person. As if to prove that suspicion, what is the identity of the commander who appoints Yumiko and Kinuko as bodyguards as if they were shields for Babil II?