Beijing netizen Gan Xiaowan is a "fan" of Nalan Xingde, a famous poet in the Qing Dynasty. She and a group of netizens often gather to discuss the cause of Nalan's death, which is an eternal mystery. Gan Xiaowan believed that the matter was related to the current emperor Kangxi, because he and Nalan were both good friends and love rivals. According to historical records, Nalan's first love Hui'er actually married into the Qing palace, became the emperor's concubine, and gave birth to his eldest brother. Gan Xiaowan also believes that the answer to this mystery is still hidden in the Forbidden City. She took advantage of her position as a tour guide to conduct a large search in the Forbidden City. Unexpectedly, on a full moon night, she fell into a time tunnel and returned to the Qing Dynasty three hundred years ago, where she met her idol Nalan Xingde!
