Ji Bai is a no-nonsense cop, a man of action. Xu Xu is a soft-spoken new recruit from a psychology institute. Will these two opposites be able to put their differences aside to fight crime without driving each other crazy?
A madman is burying blades in parks around the city and Xu Xu is on the case. Her skills of deduction reveal that it isn't simply a case of mayhem, but a corporate kidnapping.
During the kidnapping sting, Xu Xu uses her skills of deduction to find the right culprit, but it takes Ji Bai's street smarts to figure out the motivation.
Ji Bai and Xu Xu continue to investigate the case, but their methods are still in opposition. Ji Bai forces her to pass the physical exam or else she'll be dismissed.
Further investigation into the Ye family's dealings reveals connections to drugs and human trafficking. Yao Meng goes undercover as the team prepares to move against the "Big Boss."
Ji Bai and Xu Xu enjoy a flirtation on the way to Myanmar to gather evidence on the human traffickers, and Yao Meng and Zhao Han bond back at the station stuck on desk duty.
