In a bleak, cold prison, female inmates keep becoming "accidentally" pregnant, while under the calm surface, dark currents swirl. Lu Chenzhou, a young guard just starting the job, expects an ordinary rotation. But after stumbling upon the bizarre pregnancies, he is drawn into a maze of secrets. Someone is secretly injecting a mysterious drug, someone else is weaving a cage out of greed, and even the prison warden seems to be hiding something.
As his investigation deepens, Lu Chenzhou discovers that the pregnant inmates are connected to human experiments, the infiltration of criminal forces, and even a deadly game of strategy that could decide the fate of an entire city. Every step of the investigation is a contest against the darkness. As the fragments of truth come together, can he escape the fog and uncover the prison's shocking mystery of pregnant inmates, a case that defies human nature?
