Introduction: In Seoul, South Korea, a once tight-knit group of 12 people start to loosen their bond,  after one of them,  goes mysteriously and unexplainably missing. 2 years later, her body is found and then, the 11 reunite at the funeral, only to find out, she was murdered. The 11 are determined to find out what happened to her and who did it. Even worse, someone is threatening them and knows all the secrets they wanna hide from this world. This story is a mixture of Mystery, suspense, drama, horror, romance which is then haunted by betrayal. Remember, it is always the unexpected ones. Trust me, you can never predict what will happen here ;)...