Under the "Celestial Dome", the splendid city in the sky suspended in the clouds, is the "Chen Abyss", a lower-level city shrouded in shadow and extremely filthy. Connecting the two are hundreds of huge engineering marvels called "Titan Spine" - sky-supporting pillars. Engineer Rigg Titan, a technical elite who came from the dust abyss and joined the Skytop Maintenance Department with his talent and tenacity, is the daily guardian of these lifelines.
During a routine deep-diving maintenance, Rigg discovered an anomaly inside the core structure of the pillar: an unknown crystal that had never been seen before, exuding a faint blue light, was eroding the super alloy of Titan's spine at an alarming rate. What made him even more chilling was that the initial emergency report came to nothing. Instead of initiating an emergency plan, upper-level managers began to cover up evidence, restrict investigation authority, and even exclude him from key decision-making circles.
As the crystal erosion intensifies, the pillar structure groans dangerously, and sporadic structural collapses and mysterious "energy tremors" begin to appear in the dust abyss. Rigg realized that the prosperity of Sky Dome was built on lies and shaky foundations. Once the pillars collapsed, Dust Abyss would be the first to be destroyed, and then Sky Dome would not escape the same fate. With little time left, Li Ge must break away from the shackles of the system, unite old friends from Chen Yuan and technicians with the same conscience, and deeply explore the nature of crystals. Not only do they have to find engineering solutions to reinforce or replace the pillars, but they also have to uncover the shocking secrets of the source of the crystals, as well as the truth that the higher-ups are willing to cover up at the expense of millions of lives.
