Ho Chul pays a severe price for going against the rules, and Dong Ju dies at the hands of Tae Jin. Ho Chul realizes that the only way he can save his daughter is to follow Tae Jin's orders. Meanwhile, the special investigation team at Hwajin Police Station begins digging into the Rich Girl serial killer case and Dong Ju's murder. As they investigate Dong Ju's murder scene, they find evidence pointing to an unexpected person.
