Late at night after the practical training ends, Zhou Ning and three classmates receive a notification for a temporary shuttle bus. Zhou Ning discovers anomalies in the license plate, driver information, and remarks, insists on dissuading everyone from boarding, and contacts the teacher in time to verify. In the end, a plot targeting students is uncovered by the police, the suspects are caught, and the school improves the shuttle system. The four return to school safely, learning rational judgment, self-protection, and mutual trust amidst the thrill.