In the Wasteland Era, the world is divided into the luxurious upper city and the gloomy lower city. Although Ning Fan, a young man from the lower city, got excellent results in all nine tests, he was not selected for the upper city selection due to his bloodline. In order to save his mother who was seriously ill and in a coma, he resolutely stepped into the dangerous wilderness and joined the "Wild Dog House" walker team. From a young rookie to the core of the team, he has won the recognition of his partners with his resourcefulness and resilience. In the face of conspiracy and class injustice, he shared life and death with his teammates, adhering to his true heart in the tempering of blood and fire, shouldering responsibilities as a young man, and defending friendship and justice in the cold night of the end of the world. Adapted from the Tomato novel "The Offender" by Li Ma
