Shen Yuan, the leader of the Criminal Investigation Detachment whose sister was kidnapped, met Qin Zheng, the leader of the Criminal Investigation Detachment of the Second General Bureau under the pseudonym Gu Cheng of the criminal gang, who was related to his kidnapped sister. When Shen Yuan temporarily believed in him, he and Qin Zheng embarked on a "journey" to save his sister and solve the serious case that had not been solved for many years.
Purpose: To express love for Yuan Dan and respect for all police officers