In the year 3728 of the Era, human civilization huddled in nine floating cities, surviving surrounded by everything-devouring gray fog and man-eating bone-eating beasts. The countdown to star core exhaustion is ticking, the shadow of the falling floating city is approaching step by step, and the "Era Whisper" deep in the gray fog is awakening forgotten prehistoric secrets.
Lin Ye, a low-class orphan who was burdened with the trauma of the destruction of his neighborhood, accidentally touched a fragment of the star map of the previous era and awakened the virtual source energy of reading the memories of the ruins. However, he also became a "source of pollution" wanted by the lawful people. He was forced to step into the gray fog, and walked with the cynical senior market walker Lao Gui, looking for clues to the survival of civilization among the ruins and beast tides, but he did not know that he had already been involved in a choice that spanned the ages.
The pursuit of the captain of the Order Su Ning, the ambition of the city lord Zhao Chengye, the truth about the destruction of the previous era... When the three star map fragments pointed to the core of the era on the edge of the ruins cave, Lin Ye understood: restarting technology is to drink poison to quench thirst, and only by sacrificing oneself can the source of the gray fog be closed. Between personal life and death and the survival of millions of people, he held the bloody star map fragment tightly. Behind him was the crumbling floating city, and in front of him was the abyss leading to the end of the era.
