Getting back to the game, Guan Hongfeng rejoins the police department to help solve an ongoing series of gruesome murders.

Settling their differences, Hongfeng and Zhou Xun reach an agreement; Hongyu and Shutong indulge themselves at a club while looking for witnesses, to the dismay of others on the case.

Hongfeng closes in on the killer, but the killer closes in on him as well; Shutong practices her interrogation skill; Hongyu has a surprise visitor.

The encounter at Hongfeng's apartment turns violent; Shutong receives a commendation; a renowned gang member that Hongfeng and Zhou Xun arrested turns up dead.

Distraught on meeting the victim's daughter, details about her own family start flashing before Shutong's eyes; the team inspects the last place Qi Weidong visited before disappearing.

Liu tries to clear the air with Shutong, who in turn comes clean with Hongfeng; Hongyu ventures out, but the day doesn't go as planned.