Five years ago, under pressure, police detective Su Ying married Lin Chuan, a taciturn food delivery rider. She thought it was nothing more than a mundane compromise. Later, she discovered that the man she had looked down on for five years was known by the codename “Zero.” He had once been chosen as the core operator of humanity’s ultimate line of defense, but disappeared with fragments of the protocol before the final test. Now his former comrades are scattered, and pursuers close in from every direction. Holding the “key” he left behind, she ventures into an underground labyrinth, where she accidentally activates the long-sealed anchor point of the “Cornerstone” protocol. Sealed within it are not only the fragments of his shattered memories, but also the source of “Firmament”: an indescribable, ancient gaze from beyond the stars.
