A hundred years ago, the Saintess Sect gave birth to a goddess. It is said that "whoever wins the goddess wins the world." Seventeen-year-old Yan Zhiting is the youngest candidate disciple in the sect. She is extremely talented and proficient in medical skills, military arts, and swordsmanship. She has high hopes for her master, Master Yuqing. Because she was destined to have a love disaster, the master gave her the word "Wuxin", hoping that she would cut off the love strings and devote herself to enlightenment.
On the eve of the election, Yan Zhiding was injured by her senior sister Shen Qingwu while practicing swordplay at Duanhun Cliff. Later, she ran into the sixth prince Qi Yu who was being hunted by an assassin. On the surface, Qi Yu appears to be a dissolute prince with no power in the court, but in fact, he is very deep in the city. He secretly investigates the emperor's brother's collusion with foreign enemies, which has touched the interests of some people. The two of them were forced to fall off a cliff, and Qi Yu used his body to protect her, causing serious injuries and amnesia. Yan Zhiting stayed with him for seven days and seven nights, and the two fell in love with each other on the beach of the underground river. After Qi Yu regained his memory, he left without saying goodbye, leaving only the words "wait for me".
On the day of the election, Su Mianmian, the junior sister she was usually closest to, suddenly reported in public that Yan Zhiting was having an affair with a man from outside the mountain. Qi Yu appeared in time and suppressed the matter with the dignity of a prince, but he revealed the secret of the strange poison "Frost Cold" in his body - this poison entered the heart, and the deeper the emotion, the faster the poison spread. Yan Zhiting finally knew that every step he took was playing chess with his body.
After that, Yan Zhiding was expelled from the sect. Shen Qingwu took the opportunity to pretend to be a goddess and join Qi Yu's imperial brother, intending to use the imperial power to ascend to heaven. However, due to his talent and virtue, he repeatedly did bad things and was eventually drained of his value. Before his death, he suddenly woke up and left a key clue for Yan Zhiting. At the same time, young children disappeared frequently near the capital, which revealed the shocking secret of the queen using the heart of a child as medicine to preserve her appearance. Yan Zhiting and Qi Yu work together to investigate the case and peel off the cocoons.
