A first-hand account of the Tokyo Metropolitan Police beat following Jake Adelstein, an American journalist who embeds himself into the Tokyo Vice police squad to reveal corruption. Based on Jake Adelstein’s non-fiction book of the same name.

In the near future, the economy has collapsed and the country has turned into a ghetto. A secret agency, Gokuraku, has been created by the government. Secret agents Aya and Chinatsu's mission is to fight against one of the largest international companies, Kuroda Group. Secret agents are called 'Lady Ninja', and they use a traditional Japanese umbrella-like tool called 'sangoku' to defeat evil.

The background to and depiction of a watershed battle in Japanese history, at Sekigahara in 1600, when Tokugawa Ieyasu's Army of the East defeated the Army of the West of Ishida Mitsunari. The story includes the intrigues and shifting loyalties of the various retainers, family members, and samurai.

Two historical incidents that deepened the friendship between Japan and Turkey are connected in this story of friendship and compassion: In the night of 16 September 1890 the Turkish frigate Ertuğrul is caught up in a typhoon and sinks off the Japanese coast. Risking their own lives, local villagers are able to rescue 69 Turkish sailors. Although being very poor and having hardly to eat, the villagers share what little they have with strangers from a country 9,000 kilometers away. 95 years later, during the Iran-Iraq War, more than 300 Japanese are stranded in Tehran. In the morning of 19 March 1985 a Turkish Airlines aircraft takes off for Tehran to evacuate the Japanese. But the remaining Turks at Tehran Mehrabad Airport still need to be convinced that they won't be able to board their own country's rescue flight.