When a meteorite hundreds of kilometers in diameter tears through the stratosphere, the blue star turns into a burning glass ball. Global earthquakes shattered continental plates into puzzle pieces, 1,000-meter tsunamis swept away half the population, and volcanic ash obscured the sun for three years. The former civilization was reduced to ruins intertwined with steel bars and lava, and the survivors lingered in radiation dust and aftershocks.
Geologist Su Li, feeling guilty about the failure of the earthquake early warning, searched for a stable shelter in the cracks of the fractured crust; former engineer Lu Chen used blasting technology to open up a way out and guard a group of children holding half of their textbooks. When the two meet in a subway station half submerged by lava, they discover that the real disaster is not the meteorite - but the extinguishing light of reason in humanity's desperate situation. From building radiation-proof shacks to repairing micro-hydropower stations, from fighting against predators to uniting scattered survivors, they use geological maps and wrenches to redraw the outline of civilization on the broken land, and the light that lights up the cracks will eventually become the star that leads to new life.
