Insurance loss assessor Lu Ze, while handling a high-value claim case, relied on his professional experience to sense anomalies in the accident. Refusing to easily sign and confirm the claim, he simultaneously reported to relevant departments for verification. Facing pressure from multiple sides and various traps, he upheld his professional principles, used industry knowledge to sort out clues, and identified hidden traces of illegal black industries. With the cooperation of relevant police personnel, he collected key evidence and assisted in investigating this gray industry chain. After the storm settled, Lu Ze declined a job promotion, returned to his loss assessment position, and continued to faithfully perform his duties.