As a B-class sentinel, Shen Che accidentally learned of the death of his friend Lu Zhihua. In order to investigate the truth of the matter, he took the initiative to apply for assistance at his friend's base.
There he met Chen Chuan, the B-level sentinel supervisor, and accidentally discovered his secret. As the investigation deepened, the truth about the entire base gradually emerged.
Intention: If everything returns to zero, maybe we shouldn't meet