During negotiations at Hongxing Machinery Factory, Lu Zhibai, a technical interpreter, is inexplicably fired by the factory director, Qiu Maochang. His replacement lacks the necessary expertise, causing the negotiations to collapse. The Russian side specifically requests Lu Zhibai's involvement. Hired as a procurement consultant for the Russian side, Lu returns to the negotiating table in a professional capacity. He confronts responsibility for past improper practices, exposes management loopholes through rigorous inspections and compliance procedures, and ultimately secures a fair partnership, achieving a dual transformation of his career and personal integrity.