Lin Yu is an ordinary delivery boy who travels through the streets and alleys of the city every day, working hard for a living. He comes from a remote rural area, his parents are simple farmers, and he has a younger sister Lin Xiao who is in high school. In order to support his sister's education, Lin Yu dropped out of school early and came to this city to work as a delivery boy. He has to work for more than ten hours every day, exposed to wind and sun, just to make a little more money so that his sister can have a good learning environment and his parents can live a good life. He once thought that his life would be so ordinary, until that day, an unexpected car accident caused him to activate a mysterious existence called the "Urban Survival System". From then on, his life ushered in a turning point, and he could receive generous rewards for completing system tasks. From improving his life to improving his abilities, from providing food and clothing to realizing his ideals in life, Lin Yu began his counterattack in the city.
