Two couples engage in adulteries with each other then discover the joys of wife swapping when they meet another free spirited couple.
A concubine is exiled from the Shogun's harem after she is found guilty of having tried to smuggle a kabuki dancer into the palace for the purpose of an illicit affair. Another concubine believes she has been framed and keeps investigating.
The sixth year of Hōei. In the sixth year of the reign of Tokugawa Ienobu (Hiroyuki Mikawa), the sixth shogun, Kayo (Yumi Nakano), a maid in the O-oku (inner sanctum) of Edo Castle, was beaten. The incident is buried in the dark, and the closet where Kayo was beaten becomes an "unopened room. One day, after four years had passed, Echizen no Mori (Toshihiko Oda), on a hawking trip with Ienobu, presented Ienobu with a beautiful tattoo of Oma (Maya Kitami) on his back. Ienobu is overjoyed and becomes completely captivated by O-Man's body...