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Under the heavy pressure of life, Gao Zhilei (played by Xu Zheng), who was once full of energy, lost his speed and deviated from his original life trajectory in middle age. His impulsive decision instantly transformed him from a family's "little pride" into a "corner of society". However, he did not expect that this was only the starting point on his path of "reverse life". The continuous changes came like a storm, forcing him to face himself again. When the burden of life truly weighed down his shoulders, he chose to become a delivery man, starting from a new starting point and shuttling through the streets and alleys of the city, Gao Zhilei met a group of like-minded "knights" on the road. During the time spent together, he deeply experienced the warmth and coldness of the world, and gradually regained the courage and beliefs he had lost in this challenging "retrograde path", redefining a new direction in life.