得宝一伙去扒火车物资时，遇到警察追捕，得宝带着水旺逃跑，尕娃则留在了那趟行驶的火车上，他想去寻找多年前外出打工失踪的父亲。尕娃妈因为丢了孩子旧疾发作，得宝被马喊水、白校长轮番教训。福建来的干部陈金山在火车上遇到了扒手，因为口音问题，难以与当地警察沟通，会普通话的得福被叫来与他沟通。
When Debao and his gang went to steal supplies from a train, they were chased by the police. Debao fled with Shuiwang, while Ga Wa stayed on the train to find his father who went out to work and disappeared many years ago. Ga Wa's mother's old illness relapsed because of the loss of her child, and Debao was taught a lesson by Ma Hanshui and Principal Bai in turn. Chen Jinshan, a cadre from Fujian, encountered a pickpocket on the train. Because of his accent, it was difficult to communicate with the local police, so Defu, who could speak Mandarin, was called in to communicate with him.
