This fiction novel leads the reader back to Japan at the beginning of the Meiji Era (1868-1911). It showcases adventure, love, crime, and murder. A rogue samurai by the name of Yamanouchi-Oka-son, whose only weapons are a tessen (iron fan) and a sokubaku (small chain), is hired by the Japanese Special Operation Affairs. Oka-San, being a ronin, takes on the job of rescuing a beautiful female Special Operations spy from the yakuza (Japanese gangsters). During their escape down the Tokaido Road, with its fifty inspection stations, the woman is kidnapped from him. She is replaced by another beautiful woman. This replacement turns out to be a ninja. She falls madly in love with Oka-San and saves his life more than once. This only leads to numerous twists and turns in their assignment with the Japanese government.