Fu Qinzhi and Huo Fengyan are modern readers who are well versed in Cthulhu culture, and their souls have traveled to a different world in the near future style. A car accident broke the peace. Fu Qinzhi woke up from the hospital. Everyone insisted that he had not left home, but the deceased's strange recording pointed to him. As the clock struck midnight, he returned to the moment of the car accident. The police regarded him as the murderer, but the alibi of the homeless man who was the only witness was confusing. As the number of cycles increased, Fu Qinzhi discovered that the memory had been tampered with, and the numbers written in blood by the "non-existent" witness were the same as in his dream. He and Huo Fengyan must rely on their understanding of Cthulhu knowledge to break through the fog of memory, fight against the ignorance of the other world and the forces of Cthulhu, and prove their innocence within 24 hours, otherwise they will be trapped in the cycle of death forever. In this process, they must always resist the mental erosion caused by taboo knowledge and make difficult choices between reason and truth.