The imperial power of Daliang is in decline, and the strife in the harem never ceases. Xin Yuan, the daughter of a general, enters the palace by imperial decree, carrying no treasures, but instead bringing a full rack of weapons to set up defenses. On her wedding night, she encounters a rebellion by the imperial clan, puts on armor to quell the rebellion, and once finished, hides her sharpness again to act as a fragile noble lady, forcing the emperor overnight to handle state affairs. The concubines in the harem each possess unique skills, and a cloud of medicinal mist makes objects spiritual. When foreign enemies attack, the concubines mistake the enemy and fight hard to defend the city. Facing the palace coup and the deposing of the empress, Xin Yuan simply abandons the empress position to ascend the imperial throne, enfeoffing a group of capable concubines to guard the borders and pacify the chaos of troubled times.