Eun Ha gets attacked at night in King Castle and her flash drive goes missing. Ae Rin finds this incident very suspicious and contacts Ji Yeon at National Intelligence Service. In the meantime, Bon and Yong Tae run into each other, and they plan to find out who The Voice really is. And Yong Tae meets Ae Rin and tells her that Jeong Il's death was an accident.
은하와의 통화 후 정일의 죽음에 대한 퍼즐을 맞춰가는 애린.
애린은 은하를 만나기 위해 킹캐슬 아파트로 발걸음을 서두르고..
그 시각, 케이도 USB가 은하에게 있다는 사실을 듣고는 킹캐슬 아파트로 향하는데..
