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?!

A bizarre medical exam of a nude woman by several doctors and scientists reveal that their latest subject has committed suicide before giving birth to one of the mutant creatures they had ...