While Lin Ruoxi was on vacation, she received an urgent mission of a mass poisoning of teachers and students at a mountainous primary school. When she rushed to the airport, she was maliciously blocked by ground staff. She rushed to the scene despite obstacles and found out that the discomfort was related to banned pesticides. Following the clues in depth, we found that there were many entangled interests hidden behind it, and there were also many parties obstructing the investigation. Lin Ruoxi withstood the pressure, found out the truth, and uncovered those responsible, keeping the children safe and allowing justice to be served.