Yu Wu, a modern reader who is familiar with Cthulhu culture, travels with his soul to a different world that is peaceful on the surface but is actually shrouded in the shadow of the old rulers and outer gods. She started as an "investigator" and then got involved in a strange incident. The local Cthulhu fanatics regard her as an obstacle and try their best to sabotage her investigation of strange events and acquisition of forbidden knowledge. If Yu Wu fails, his sanity will be eroded by the Old Ones and he will fall into madness. At the same time, she must prevent Cthulhu from resurrecting within a limited time, which seems to be an impossible task.
Yu Wu's instinctive fear of the horror of Cthulhu affects her actions, but she moves forward with difficulty based on her advance understanding of the Cthulhu mythology. However, she was misunderstood by the local residents as an ominous person who brought disaster, and was left alone. During the investigation, she met some helpers, but as the incident progressed, the opposition between the camps became more obvious, and she formed a fierce confrontation with the fanatical believers.
With the help of his helpers, Yu Wu successfully prevented the arrival of Cthulhu, but found that the helpers fell into madness due to exposure to forbidden knowledge, which made the victory full of bitterness. Time is running out before Cthulhu fully recovers. In this harsh environment penetrated by Cthulhu's aura, she not only has to deal with terrorist biological attacks, but also continues to look for ways to prevent Cthulhu from resurrecting, struggling to survive in many difficulties, and trying to break this terrifying situation.
