In the smoggy lower city where neon lights and sewage intersect, the fluorescent bacteria in the abandoned clinic light up on time every night. Cheng Ye, a genius doctor whose license has been revoked, holds a homemade scalpel and is more skilled at removing bullets from gangsters than a delivery boy is at unpacking packages. Until one rainy night, a girl covered in blood, Jiang Xiaoyu, kicked off his security door and threw out a tube of blood mixed with nano-robots: "If you can't cure it, I'll blow up your mushroom incubator!"
When a military-grade tracker beats in the patient's heart, and when the bounty on the dark web exceeds eight figures, Cheng Ye discovers that it's not just wounds that need to be sutured this time, but something more dangerous than genetic collapse - trust.
