Guan Siyi is the son of Guan Quan and Guan Bai played by Suomu in the TV series "By the Jinshui Bridge", and a new generation of progressive young people in the old Beijing Mansion. He is kind and brave, optimistic and cheerful, not only influenced by traditional culture, but also able to easily accept the ideas of the new era.

abstract

1949 In Beijing, Kuomintang spies frequently made troubles, and a fire destroyed the Beiping tram factory and destroyed public transportation in Beijing. Sun Guangda, a war hero, was transferred to the public security bureau to investigate the case with Qian Yougen, an experienced and bad policeman.

With the help of Qian Yougen, Sun Guangda cracked a big case. Sun Guangda helped Qian Yougen save Zhao Chunhua and set up a family. The death of Qian Youcai, the younger brother of Qian Yougen, buried an inseparable misunderstanding in the hearts of Sun Guangda and Qian Yougen. Sun Guangda wants to solve all these misunderstandings and rehabilitate money. Only by catching Zhang Youyi, the party concerned, Zhang Youyi was extremely cunning, and escaped the police's raids several times.

Finally, Sun Guangda finally caught Zhang Youyi, and Qian Youcai's unjust case was rehabilitated. After many twists and turns, Qian Yougen finally fell in love with Sun Weiguo, the son of Sun Guangda, took Sun Weiguo as his son-in-law, and taught his unique crime-solving skills to Sun Weiguo. On National Day, Sun Guangda and Qian Yougen finally made friends and found brotherhood.