Zhou Chen worked as a material merchant in the apocalyptic wasteland for ten years, making a living by reselling cans and water purification tablets. When he opened his eyes, he transformed into the owner of a private detective agency that was on the verge of bankruptcy in a modern city. The bank card balance is three digits, next month's rent has not been paid, and the newly opened detective agency opposite is still trying to get business. Zhou Chen looked at the "Looking for Lost Cat" case on the commission column and sighed. Until he accepted an ordinary commission to "investigate her husband's cheating" and used trace tracking and micro-expression observation learned in Doomsday. In three days, he not only got the actual evidence of cheating, but also uncovered the commercial espionage in the client's husband's company. When the police car sirens came, Zhou Chen counted the remaining payment and leaned back on the old office chair. There is nothing dangerous in this world except poverty.