The Lonely and Brilliant God: Ghost was a Korean web novel that mainly told the story of humans and undead creatures. The following is a possible plot reasoning: Undead creatures exist but they have no life because their souls are not dead but trapped in this world. Therefore, if an undead creature suddenly disappeared, people might think that it was dead. There is a mysterious connection between humans and undead creatures. Because the undead creatures were lifeless, they could not perceive the world like humans. However, under certain circumstances, humans and undead creatures might communicate. There is a complex moral relationship between humans and the undead. Since humans and undead creatures exist, humans may think that they are the same species. However, because the undead were lifeless, they were not subject to the same moral restrictions as humans. There was a complicated war between humans and the undead creatures. Humans were threatened by the existence of the undead creatures. Therefore, humans and the undead creatures may go to war to protect their homes. There is a complicated friendship between humans and undead creatures. Under certain circumstances, humans and undead creatures might help each other. Therefore, they might become friends or even establish a cooperative relationship. The above was just a possible plot deduction. The specific plot still needed to be analyzed in conjunction with the original novel.