Forced to Become a Delivery Boy in the Underworld

In the modern city of "Eternal City" in parallel time and space, the world is peaceful and peaceful on the surface, with fireworks as usual, but in reality the yin and yang overlap. The resentment accumulated in the world breeds countless evil spirits and evil spirits, lurking in the corners of the city to harm people, cause accidents, and confuse people's hearts. On the eve of the collapse of order in the underworld, a king of hell secretly harbored dissent and plotted rebellion. In order to stabilize the human world in advance and suppress the resentful spirits, the underworld has opened the [Underworld Delivery Platform], and the entire network has screened ordinary people who are kind-hearted, righteous, obsessive, and will never fall into the devil's traps to become temporary yin-yang delivery persons in the human world. The protagonist Yang Fan lives at the bottom of society, struggling to pay for the sky-high medical expenses of his seriously ill mother. He accidentally binds the system on a rainy night. From then on, he starts a dual life of working in the world to save lives, and at the same time crossing the soul between yin and yang late at night.