In the grand ballroom of Edo Castle. The 13th shogun, Tokugawa Iesada (Kitamura Kazuki), and Atsuko (Kanno Miho) are about to hold a wedding ceremony. Behind the seemingly luxurious and lavish party, there is a complicated political situation between the shogunate and the Satsuma clan. A secret engagement with Katsuaki Togo (Ryuji Harada),a marriage acceptance on the orders of Shimazu Nariakira (Hirotaro Honda), the feudal lord of the clan. An onlooker of this farce from the sidelines with mixed feelings Takiyama (Asano Yuko). The mistreatment by the palace ladies Kuzuoka (Machiko Washio), Yoshino (Kaori Yamaguchi) and Urao (Maki Kubota), Hatsushima (Tae Kimura).The retainers Yukie (Hoshino Mari) and Matsunosuke (Kaneko Takatoshi). The poisoning of Keifuku (Kamiki Ryunosuke). Was it really the handiwork of the Hitotsubashi faction, which wanted to prevent Keifuku from succeeding as Shogun? Or...! Then a surprising fact is revealed.

"A wedding. A poisoning. A wedding of the Shogunate."