The play tells the story of the Shehuo Jihui, who is burdened by life, accidentally finding an ancient book on immortality in the reinforced city of 2025, and awakening together with the AI fox fairy pet Ling Xi. On the way, they meet Su Wan, a descendant of the demon clan who is responsible for the forgotten past of the race. The three work together to fight against the demonic forces who use the "killed is forgotten" rule to evade sanctions, and a counterattack story that reveals the truth of "institutional forgetfulness" in the gap between reality and the world of immortality.
