In the shadow of reality, Lin Chen grew up in a secret experimental base where dozens of special children were gathered as experimental subjects. The experimental base is called "The Crack" and specializes in studying extreme human potential. The experimental subjects have no right to choose their own destiny and can only struggle under an indifferent system. Lin Chen is extremely talented and is monitored closely. His hope in the outside world has never been extinguished. Song Lan, once an ideal psychologist, was now one of the persons in charge of the experiment. She saw in Lin Chen her lost freedom and conscience. As the high-pressure policy escalates and Lin Chen awakens to a sense of resistance, the conflicts within the rift continue to intensify. Lin Chen and Zhao Jin secretly planned to escape, while Song Lan was torn between morality and responsibility. After experiencing betrayal, sacrifice and trust tests, Lin Chen led some experimental subjects to break through layers of blockades and face Gao Bo's pursuit. The cruelty of reality and the brilliance of human nature intertwined. Lin Chen finally broke free from the prison and saw his own sky beyond the rift. The novel uses a realistic style to describe the experimental subjects' struggle for survival, resistance and growth under institutional constraints, reflecting the restrictions and desire for individual freedom in real society.