Twenty-three years ago, an abandoned baby was abandoned at the gate of the Northern Prison.
Northern Prison - the most mysterious and dangerous forbidden place in China. Those imprisoned are not only felons, but also secrets that the country cannot tolerate in the world. Lin Tiannan, the soul of the expeditionary force and the founder of the Northern Prison, picked up the child and named him Bai Lin.
Twenty-three years later, Bai Lin left the northern border with the rank of lieutenant colonel and was ordered to take charge of the Capital Guard.
He thought that leaving the North was a new life. But the water in the capital city is deeper than the snowfield——
