Beyond the black wall is the long night that engulfs the world.
Within the black wall are the poor, the sick, the dead, and a group of night watchmen who dare not sleep too deeply.
When Gu Changjin was sixteen, his father, who had been missing for three years, knocked on the door of his house on a snowy night.
He remembered the rules of the city: knocking on the door at night was not allowed.
But he didn't answer the door, and something outside the door was staring at his sister.
From the reverse footprints to the white-faced monster, from the black coffin knocking on the door to the echo of the old well, from his father's old knife to the remains of the third patrol team, Gu Changjin was dragged step by step into the deepest part of the long night.
Others light fires to survive.
He lit the fire to protect the people behind him.
Endless night?
Then burn a way.
