I am a criminal police officer.

In the 1990s, in Hechang City, Zhongchang Province, grassroots police officer Qin Chuan worked hard to further his education and finally achieved his wish of becoming a criminal police officer. After the heroic sacrifice of his mentor Gao Jianjie and his friend Ye Maosheng, Qin Chuan became even more determined to uphold justice and punish criminals. He participated in solving multiple cases and gradually grew into an outstanding representative of the Zhongchang criminal investigation team. The criminal investigation career requires cultivating newcomers, and the Zhongchang Provincial Public Security Department specially invited criminal technology expert Cao Zhongshu, who was impressed by Qin Chuan's talent and dedication. Chief criminal investigation expert Wu Yingde rigorously evaluated him and accepted Qin Chuan as a disciple. In the process of solving difficult and serious cases, Wu Yingde, Cao Zhongshu, and younger criminal police officers like Qin Chuan, Tao Weizhi, Li Wen, and Zhao Fei worked together, training a group of more modern and professional young criminal investigators through practical experience. The dedication and commitment of the frontline criminal police also inspire their next generation, realizing the torch of police spirit being passed on.