During the pursuit of suspect Ning Jie, Mai Jie and Pi Xiaodong successfully captured Ning Jie through cooperation with the G399 high-speed railway police, but they failed to find the kidnapped Midoxi. Mai Jie decided to temporarily control Ning Jie on charges of stealing meteorites, using psychological tactics to force him to confess his accomplices in order to investigate the whereabouts of Midosi. At the same time, Ma Yong found the last location information of the missing network engineer Hong Bin, pointing to the Children's Theater, while Cai Lin reported the new discovery at the scene of the meteorite theft, which confirmed that the suspect used a special floor to create a secret room theft case. Mai Jie met Cui Zheng in the parking lot of the Criminal Investigation Bureau. Cui Zheng apologized to Mai Jie for the previous misunderstanding and revealed that the IP address of the suspect in the hacker attack has been traced.