In 2088, the most outrageous murder case in history occurred in New Magic City - technology giant Ma Buqun died in the anti-gravity office on the 39th floor. His body was arranged in a "big" shape with a glowing mechanical cockroach inserted in his chest. Bad detective Mo Xiaoxing was forced by the director of AI to recruit technology company security director Su Bingbing as his partner. The two discovered that the holographic projection left by the deceased was live-streaming on TikTok.
As the investigation deepens, they encounter a sweeping robot that curses, a security system that suddenly performs a square dance, and a quantum computer that always displays a blue screen at critical moments. When all the clues pointed to the black technology of "consciousness uploading", the mechanical cockroach suddenly said: "Family members, who knows? The murderer is in your friend list!"
