Sakura, working as a maid in the mansion of wealthy Hojo Fuyuhiko, is chosen by him and becomes his wife. However, someone grows envious of her happiness—Miya, another housekeeper in the Hojo household. Miya secretly conspires with butler Kirisaki to seize control of the Hojo estate. Upon learning of the plot, Hirunuma captures Sakura, subjects her to brutal training, and sells her into a slave market. At the auction, Sakura is shocked to encounter Fuyuhiko once again—now also sold into slavery.