On the high-speed train to Qin'an, Zhang Chuan, one of the most famous communication experts, is commissioned by Chen Tianci, the director of the State General Administration of Communications, to repair the national transportation communication system. After Zhang Chuan's restoration, when the communication system is about to be completed, Zhao Maomao, a bearish child, keeps disturbing Zhang Chuan, and Zhang Chuan, who can't stand it any longer, reprimands Zhao Maomao, who is unexpectedly stopped by his mother, Bai Weiwei, and his grandfather, Zhao Jianguo.
