Do you believe it? The seventh day after death is the real beginning. Folklorist Jiang Lin received his father's relic - a bronze compass engraved with the Dunhuang blood moon, but was sucked into the "return to ruins" while filming. There is no heaven or hell here, only cold rules: 7-day time loop: death is not the end, but the beginning of digitization. 7 Human trials: Tower of Pride, Sea of Jealousy, Pit of Fury... Those who pass the level are reborn, and those who fail become NPCs. 1 Hidden rule: All players are guinea pigs in the quantum experiment of the "Kunlun Research Institute". When Jiang Lin discovers the secrets of his teammates: the hacker girl who can tamper with system data is wanted; the surgeon's scalpel has cut the throat of a living person; and he himself is the "out of control sample" of experiment number 0793... We thought we were solving the puzzle, but in fact the puzzle is ourselves.