Maomao, an apothecary's daughter, has been plucked from her peaceful life and sold to the lowest echelons of the imperial court. Now merely a maid, Maomao settles into her new mundane life and hides her extensive knowledge of medicine in order to avoid any unwanted attention. Not long after Maomao's arrival, the emperor's infant children inexplicably begin to experience grave symptoms—almost as if a curse has been cast. The curious Maomao easily solves the mystery and, to remain out of the limelight, attempts to leave an anonymous tip. Unfortunately, the dashing and perceptive eunuch Jinshi sees through it and manages to single her out. In recognition of her talent, Maomao is promoted to lady-in-waiting for the emperor's favorite concubine, Gyokuyou. As Maomao continues to remedy the numerous ailments afflicting the imperial court, her pharmaceutical expertise quickly proves indispensable.

Using her wit and vast knowledge of medicines and poisons alike, Maomao played a pivotal role in solving a series of mysteries and conspiracies that plagued the imperial court. Having recently come to terms with the secrets of her parents, she returns to fulfill her normal duties on behalf of the emperor's highest-ranking consorts. Maomao also works alongside the eunuch Jinshi to better the consorts' many ladies-in-waiting, including helping them learn to read. However, with the arrival of a merchant caravan comes a new wave of intrigue. A pattern of strange coincidences involving the visitors and their wares unsettles Maomao, driving her to investigate the puzzling circumstances behind the convoy. As dangers from both outside and within threaten the balance between the imperial concubines, Maomao continues to utilize her cunning and medical expertise to keep the women safe from harm.

China’s Warring States period, a raging dragon that would raze the land for 500 years, saw many kingdoms rise and fall, making way for the next generation of kings and generals to fight for supremacy. Eventually, seven powerful states emerged from the endless cycle of warfare. In the kingdom of Qin, Xin, a war-orphaned slave, trains vigorously with fellow slave and best friend, Piao, who shares his proud dream of one day becoming a Great General of the Heavens. However, the two are suddenly forced to part ways when Piao is recruited to work in the royal palace by a retainer of the King. After a fierce coup d'état unfolds, Piao returns to Xin, half dead, with a mission that will lead him to a meeting with China's young King, Ying Zheng, who bears a striking resemblance to Piao. Kingdom follows Xin as he takes his first steps into the great blood-soaked pages of China's history. He must carve his own path to glory on his long quest to become a Great General of the historic Seven Warring States.

A year after the devastating battle against the formidable Zhao, the State of Qin has returned its focus to pursuing King Ying Zheng's ambition of conquering the other six states and unifying China. Their next target is Wei, a smaller state which stands as a geographic stepping stone for the sake of conquest. Xin, now a three hundred man commander of the swiftly rising Fei Xin Unit, continues to seek out lofty achievements in order to garner recognition for himself and his soldiers, motivated by those previously lost in battle. In the preliminary battles ahead of Qin's invasion of Wei, Xin finds competition in other young commanders who are of a higher social status than him. Back in Qin, the royal palace faces turmoil as opposing factions begin to make their move against Ying Zheng's regime. With their hands full both abroad and at home, Zheng and Xin must lead the way in this era of unending war, resolved to etch their names in history by creating a unified China.