In a late-night phone conversation, a woman notices the man she's speaking to is investigating her identity. She plays along with his curiosity, acknowledging that his distrustful nature keeps them at a distance. He confirms he wants to meet her in person, and they exchange names—Park Jung-soo and Yoon Jae-hyun. Meanwhile, Jae-hyun's subordinate reports that their investigation into the woman, named Han So-eun, revealed a suspiciously blank past, as if she appeared out of nowhere. Intrigued by this person with no history, Jae-hyun decides against bringing her in, setting the stage for their mysterious face-to-face meeting.