In a future world where genes determine destiny, Gu Fan, a lower-class resident, was assessed as having an F-level gene and became a "genetic waste" at the bottom of society. In order to save his sister suffering from a rare genetic breakdown disease, he risked his life and broke into the "forbidden place" with high radiation, and accidentally obtained a mysterious metal fragment.
When the fragments were integrated into his body, Gu Fan discovered that he could actually see the genetic sequence of all things, edit and upgrade them!