Delivery boy Lu Guicheng was delivering an order at midnight when he suddenly received a negative review from "Future". The content of negative reviews is not an ordinary complaint, but an advance warning of an impending death.
Since then, every night order has turned into a puzzle of rules: communities, hospitals, office buildings, urban villages, schools, subways, nursing homes... Every location has hidden rules, and every negative review points to a "price transfer." Lu Guicheng must rescue people among overtimes, fines, complaints, misunderstandings and night rules, and at the same time step by step find out the "sporadic user" network behind the city.
