Senior vehicle inspector Jiang Cheng encounters marital difficulties and workplace misunderstandings, and his life plunges into a trough for a time. With the support of his good friend Lao Meng and car dealership owner Chen Hui, he relies on his solid skills and honest service to win back customer trust, and persists in verifying the facts to clear himself of the grievance of dereliction of duty. After experiencing entrepreneurial setbacks, he learns to respect his own value and rationally shoulder responsibilities, and joins hands with Chen Hui to open an independent inspection shop, regaining confidence through down-to-earth striving and opening a new life of independence and self-improvement.