Ning Hao is a delivery boy and gets an "errand running system" that rewards cash and skills for every order he completes. He earns 100,000 yuan a month from the system and buys a house and a car. The system releases the ultimate mission: deliver a box of contraband to a transnational criminal group. After discovering the truth, he decisively called the police and cooperated with the police to set up a trap. The system disappeared after he completed the mission, but he was targeted for retaliation by the group because of his report, and was forced to leave the city and remain anonymous.