Deopail plot
Soo-kyung carries a dark past with him. In her teens, her best friend Mi-Soo disappeared without a trace. Soo-kyung felt responsible and became a journalist so that she could investigate the case on her own, without success so far. One day she gets a phone call from her childhood friend Min-Gook saying that he has seen Mi-Soo. She doesn't believe him until she sees her best friend again. This recognizes Soo-kyung and confirms her identity. However, Mi-Soo behaves very differently and Soo-Kyung senses that something is wrong.