A real culprit may be after Eun-mi. Despite opposition from the main office, Jin-hee and Jae-won accelerates their investigation into the culprit. The team members, who have become close after solving the single-parent assault case, also help Jin-hee in their own ways. Jin-hee secretly continues her investigation for Eun-mi's sake, only to find herself hiding more. Meanwhile, it seems that someone is constantly watching this mother and daughter duo...