In the twilight of the Tokugawa shogunate, the 13th shogun Iesada had a fragile constitution. In hopes of ensuring a sturdier heir, he ends up marrying the feisty and hearty daughter of the Shimazu clan, Atsuhime!
In order to bring down the Shogunate, 
the new regime's army arrives in Edo.
Para acabar con el shogunato, llega
a Edo un ejército de un nuevo régimen.
Para acabar com o xogunato,
o exército do novo regime chega em Edo.