Ran Yan, a modern woman, originally lived a peaceful life, but due to an accident, she traveled to the Zhenguan period of the Tang Dynasty. After waking up, she found herself in a strange world, full of fear and confusion.
Fortunately, Ran Yan met the handsome Xiao Song. Xiao Song lends a helping hand to Ran Yan and brings her to safety. With her love for medicine and the medical knowledge she learned in modern times, Ran Yan decided to make a difference in this strange era.
She first helped in the medical clinic and became famous for her superb medical skills. She successfully treated many patients and became famous. Later, Ran Yan was invited by a mysterious person to diagnose and treat a middle-aged man who was seriously ill. During the diagnosis process, she discovered that the middle-aged man not only had a complex condition, but also seemed to have been poisoned by a rare kind of poison.
Ran Yan and Xiao Song worked together to investigate the middle-aged man's condition, but unexpectedly got involved in a mysterious incident. They found a book filled with strange symbols in the mansion, which seemed to contain important secrets. In the process of cracking the code, they encountered attacks and interference from mysterious people, which was extremely thrilling.
As the investigation deepened, they discovered that a person named Li San was related to the matter. Ran Yan and Xiao Song searched around for Li San's whereabouts, and finally found him after many twists and turns. It turns out that Li San got a mysterious thing, which became the focus of competition among all parties and was also related to that rare poison.
In order to unlock the secret of the poison, they embarked on an adventure journey to the ancient tomb.