Su Qianyue was originally the eldest daughter of the Su family. She was extremely intelligent and beautiful since she was a child. She should have had a smooth life. However, her concubine Su Qinglian was jealous of everything she had and teamed up with her mother to frame her, disfigured her and drove her out of the Su family. Su Qianyue was living on the street. When she was desperate, she met a mysterious old man. Seeing her tenacity, the old man taught her the art of disguise and medical skills, and also gave her a lost poison scripture. After three years of hard training, Su Qianyue became a master of disguise, medical skills and poisoning. At this time, it happened to be the emperor's draft. Su Qianyue changed her name to Lin Wanqing and participated with a new and beautiful face by virtue of her superb disguise skills. On the day of the draft, her exquisite piano skills and elegant manners instantly attracted the emperor's attention, and she was successfully selected to become a concubine.
After entering the palace, Su Qianyue knew that the harem was like a battlefield. She first encountered the provocation of the arrogant and domineering Concubine Li. Concubine Li deliberately made Su Qianyue look embarrassed at the banquet, but Su Qianyue cleverly resolved the problem. She also used medical skills to expose Concubine Li's scandal of secretly taking love potions to confuse the emperor. Concubine Li was thrown into the cold palace. Su Qinglian also entered the palace with the power of the Su family. She recognized Su Qianyue, but Su Qianyue was already on guard. Su Qinglian colluded with the queen and designed Su Qianyue to fall into a trap of poisoning other concubines. Su Qianyue calmly used her medical skills to find the real murderer, and exposed Su Qinglian and the queen's conspiracy in public. The queen was fined and grounded, and Su Qinglian also lost her favor.
After Su Qianyue gained a foothold in the palace, she began to investigate the crimes of the Su family. She discovered that the Su family secretly colluded with the enemy country and intended to rebel. After Su Qianyue collected enough evidence, she exposed the Su family's evil deeds in the court.
