A night train derailed in the southern mountains. Veterinarian Shen Yan woke up from the deformed carriage, covered in injuries, and knew nothing about the accident. He thought that as long as he survived the hunger and cold in the barren mountains and walked along the railway to the nearest town, he would be able to wait for rescue. But the further he walked, the more he felt something was wrong. There was no signal on his mobile phone, the village was deserted, and there were only recurring warnings on the radio. When he finally returned to the familiar city, he discovered that he had missed a disaster that no one had notified him about - and that his skills in rescuing animals were now being used against a group of people who had long been "disqualified". The end is not the day he wakes up, but the day he is late.
