The story takes place on the eve of the National Day holiday. The protagonist Jiang Mingyuan refuses the unreasonable demand of his colleague Zhao Kai, who tries to use six years of brotherhood to force him to take over his shift. Zhao Kai leaves his post without permission to travel and intentionally fabricates handover evidence, framing Jiang Mingyuan for the huge losses caused by the flooded warehouse. Relying on various types of work evidence completely preserved, Jiang Mingyuan proves his innocence. Afterward, he rises to the occasion under emergency orders, withstands multiple pressures to save important orders, clarifies historical inventory issues, improves the company's management system, and step by step is promoted to Operations Director by virtue of his own ability, adhering to the workplace principle of clear rights and responsibilities.