In the 1980s, the technical achievements of technician Shao Chengyuan were stolen and signed off by his colleagues Pan Jiliang and Gu Wanlin. Facing the temptation of interests and workplace suppression, Shao Chengyuan refused to compromise, secretly collecting evidence such as blueprint tampering, financial fraud, and data falsification. He united with an upright veteran worker, exposed the drawbacks of the introduction plan and internal corruption with detailed data, and finally restored the truth at the factory meeting, defending technical dignity and personal rights and interests.