Lin Che, an ordinary man living at the bottom of Tianqiong City, makes a living by repairing old-era servers. The trajectory of his life was completely rewritten one rainy night - a "data package" fell from the sky. Inside the package was the most sophisticated and complex "living core" he had ever seen in his life, in the form of a little girl who looked about five years old, with clear and empty eyes.
She has no name, only a codename: Serial 2509. She is the last fire released by a certain super-dimensional civilization before its collapse, and is the "key" that can restart the logic of the universe. Lin Che, on the other hand, was accidentally selected by this "key" and became her "guardian".
From then on, the life of a nanny was forced to start. Changing a diaper? Does not exist, Sequence 2509 cleans itself through microscopic particle reorganization. Breastfeeding? No need, what she absorbs is cosmic background radiation.
While Lin Che was still troubled by how to teach a "cosmic god" the "emotions, sorrows, joys, and sorrows" of human beings, the stalkers from the depths of the star sea, the coveters lurking in the shadows of the city, and the unknown civilization seeking salvation all set their sights on the "father and daughter" living in a small apartment.
"Don't be afraid, Xiao Xi."
"Dad, what is the logical definition of 'fear'? I cannot retrieve a matching emotion model from the database."
"Afraid, that is, I will never allow anyone or anything to take you away from me."
This is the story of an ordinary man who, in order to protect his "daughter", eventually became the public enemy of the entire universe.