Qingchen grows up in hard circumstances: after his parents divorce, he chooses to live with his father, a gambling addict, so his mother is spared the trouble. Then a mysterious countdown appears on his arm. When it reaches zero, time halts and space breaks apart, and he is carried into another world, landing in the perilous Prison No. 18 beneath a sky of heavy steel. Through courage and wits he survives many trials and earns the regard of the demigod Li Shutong, who accepts him as a disciple and sets him on a path of real change. The result is a sci-fi action adventure with a strong thread of mystery.