In the quantum laboratory during the rainy season of 2025, AI engineer Cheng Ye suddenly crushed a Lego part numbered "4203" with his tweezers. This fragment of a building block that once belonged to his childhood was now releasing strange quantum fluctuations - the next second, his vision was covered in blood red, and the stench of rotting flesh and radiation dust poured into his nose. The fingertips of his right hand touched rough skin that did not belong to him: it was a radiation scar that spread from the corner of his eye to his chin, belonging to Lin Shenxue, a "defector" in the apocalyptic world a thousand years later.
At the same time, Xueshen, who was in the underground hive in 3025, was holding a blood-stained dagger against the "Raven" smuggler's throat, but he smelled the aroma of burnt coffee in his breath. She lowered her head and found a round sugar cube lying in her palm - this was Cheng Ye's habit every morning. This "soul exchange" that spanned a thousand years was no accident: Cheng Ye's brainwave frequency resonated perfectly with the space-time beacon, and Xueshen's genes actually contained the "Nibelung Box" nano-worm swarm code that triggered nuclear winter.
Double dilemmas broke out simultaneously in the cracks of time and space:
- Modern line: Cheng Ye was chased by laboratory security in Xueshen's body, but found in the mirror that Xueshen's birthmark appeared on the right side of his face, and his assistant Chen Yutong's pupils actually glowed with the purple light unique to the apocalyptic "blue blood" during the dispute; he sneaked into CEO Li Mo's office and saw the holographic afterimage of his mother - she was pushing the young Xueshen into the space-time beacon, and the background sound was mixed with her own cries buried under the rubble.
- Line of Doom: Xueshen uses Cheng Ye's body to break the genetic lock of the "New Era" organization
