简要：Soo kyung is a journalist with a troubled past. When she was in her teens, she and her best friend Min soo wanted to go to the park, but there Min soo disappeared without a trace. Soo kyung felt responsible and decided to become a journalist to investigate the case alone. But so far, she has not found any trace of her friend. One day, she received a call from her childhood friend Min gok, who insisted that she had seen Min soo. At first, Xiujing didn't believe him, but in the end, she was able to see Minxiu again. In return, Minxiu confirmed her identity and recognized Xiujing, but her behavior was completely different. Soo kyung feels that things are still very wrong, everything points to Min Soo's boyfriend Dong Min.
