Gon is informed of a murder that is about to take place from a nameless source. When he arrives at the scene, he sees a man dying. So Young joins Gon to find evidence, and they realize that there's another person in hiding at the scene. Meanwhile, Se Hwang asks Yu Ra to carry out a mission for him.
절망 속에서도 다인을 되찾기 위해 단서를 찾아가는 강곤! 한편 강곤에게 살인을 예고하는 의문의 전화가 걸려오는데...
世煌到醫院看被他弄成植物人的多仁，甚至把她轉到VIP室以方便監視姜坤。姜坤接到匿名電話，自稱是目擊者，要他前往尚未通車的地鐵站，否則李鶴俊將會死亡。姜坤不疑有他立刻前往前津站，到了那裡果然發現李鶴俊倒臥在鐵軌上。隨著姜坤而來的素英，連忙叫救護車並請求支援，只可惜李鶴俊沒救活，也不見兇嫌的影子，不過姜坤可以確定的是將要有不詳的事發生，因為這個前津站就是他夢裡的那個地鐵站。
