Su Ningwei, the concubine of the prime minister's palace, took the blame for her eldest sister and entered the palace to change clothes. When she first entered the palace, she was framed by her eldest sister and suppressed by high-ranking concubines. Without the blessing of a golden finger, she used her keen insight to expose the poisonous plot, and used subtle clues to fight back, leaving her sister-in-law to suffer the consequences. With her perceptive character, she caught the attention of Xiao Yanchen, and she gradually became the emperor's favorite person with her neither humble nor overbearing appearance. In the deep palace, she fights against concubines, protects her cronies, and seizes power. She transforms from a dressing gown that no one cares about to a queen who can stand side by side with the emperor. The whole journey relies on resourcefulness, and in the midst of intrigues, she and Xiao Yanchen write a legend of pure love between an emperor and a concubine.