Technical lead Lin Yuan was demoted publicly by the chairman's daughter Shen Zhixia, given a 120,000 annual salary, and banished to a shut-down factory. He did not argue or make a fuss, resigning and leaving on the spot. That very night, all seven production lines completely paralyzed, with the core key held by him alone. Losing six million per hour, the chairman personally came to his door, and Lin Yuan quoted five million to step in. While restoring the system, he tore open a greater dark secret: the internal mole leaking confidential information was hiding right inside the board of directors. From being dismissed to being begged back, he used only one night; and this night made everyone see clearly who was truly irreplaceable.