On the eve of World War II, an ordinary army soldier (Kazuya Kamenashi) beat his superior for helping his companions and was subsequently sentenced to death by a military court. At the critical moment, a mysterious man named Yuki (Yusuke Iseya) suddenly appeared and absorbed him into the secret department that specializes in training spies-D Agency. After going through layers of tests, the young man finally got his first mission. Not long ago, a Jewish scientist was assassinated, and his black notebook with the latest weapon design drawings was said to have fallen into the hands of American Ambassador Ernest Graham (Richard Moss). The young man came to the city known as the Magic City under the pseudonym Kato Jiro, waiting for an opportunity to steal the notebook. At the same time, agents from Britain, the Soviet Union, Germany and other countries also heard the news and moved, and the peak spy war is about to begin... This film is adapted from the series of novels of the same name by Yanagi Hiroshi.