As the Tang Dynasty is swept by turmoil, Shen Yunzheng, disguised as a man, enters the palace as a eunuch and joins forces with Crown Prince Li Yun, who is under the thumb of the prime minister, to fight against their enemies. Amidst the intricate and treacherous palace politics, they develop mutual affection. After enduring numerous hardships, Li Yun finally ascends the throne, Shen Yunzheng regains her status as a commoner, and they embrace each other passionately in a splendid sea of flowers, composing a legendary love story.
