Lu Xuan overcomes a critical technical challenge involving deep foundation pits, only to have his achievement stolen by Gao Yan, the deputy general manager, at the celebration banquet before he is thrown out. Seizing the opportunity, he gets Gao Yan to sign a Technical Full Responsibility Confirmation Agreement. While lying low, he earns recognition from industry authorities through his genuine expertise. At the acceptance inspection, safety tests expose the truth about Gao Yan's falsified data and illegal construction practices. The responsibility agreement seals her fate, and she ends up behind bars. Lu Xuan makes a triumphant return, is appointed chief engineer, and reclaims all the glory that rightfully belongs to him.