A pair of black-robed thieves who robbed many wealthy merchants in Edo one after another. One of them is a young woman who is called "Aoi no Kozo" because she always takes off her skin to show the tattoo on her back. The target of the robbers was the Kogi, and in particular, the big stores that were under the control of Hotta Bizen. Itami Hanzo, a Doshin known as "Kamisori Hanzo" discovers when he tracks down the Aoi no Kozo! What is the truth?!

Saika family made a name for itself by confusing the big troops of Nobunaga and Hideyoshi before, but, now in the 7th generation from Ineyasu's period, it was driven out into a deep mountain and had gone down in the world. A son of Ikkkokussai Saika (Takahiro Tamura), Sonshiro (DaisukeTaka) had run after a deer every day. One day, a man who seemed to be a Shugensya appeared in his place and ask him to assassinate Yoshimitsu of the Kishu Tokugawa family, who is a candidate for the next Shogun.