Programmer Gu Beichen becomes the live-in son-in-law of the wealthy Wang family because of his one-in-a-million rare blood type. He gets no wedding and no respect. At a family banquet, they force him to write “Hello World” code for their amusement, leaving him on his knees on the cold floor as they mock him.
But the moment he presses Enter, a transparent floating keyboard appears before his eyes.
“Keyboard Warrior System successfully loaded.”
From then on, every line of code he types can unleash a storm in the real world. He can make a priceless vase “accidentally” crash down on his arrogant brother-in-law, make the blood type on a medical report “change” out of nowhere, and even predict which stocks will hit their daily upper limit the next day. The Wang family sees him as a “blood bag” they can use whenever they please, while his father-in-law, Wang Zhenshan, uses a sinister “life extension” System to drain the lives of countless compatible donors.
But Gu Beichen discovers that his System can do more than change reality: it can change fate. Together with his wife, Shen Luoyan, who is also trapped in this predicament, he fights his way from the bloody conspiracies within the family to deadly battles against other System holders, gradually exposing a dark empire built on code and blood.
When he presses Enter again, he won’t just be rewriting a few lines of code. He’ll be changing the rules that govern this world that devours people.
