The gray tide descends and the land becomes a wasteland. Inside the wall, the air is clearly priced; outside the wall, the refugees are struggling to survive. In order to find his brother who had been missing for three years, Shen Li sneaked into Linyuan City by pretending to be a deceased person, but found seventeen smiling corpses and the white bird mark left by his brother in a missing transport vehicle. From that moment on, he knew that the person he was looking for might not be the same person anymore.