Lisa Monoban was a wreck. She barely has enough sleep, lives in a tiny apartment with six roomates, and barely has enough money to pay her dad's hospital bills. Even though, she knows her dad's going to die anyway since the cancer had gotten too serious she wants to spend a little more time with him so she pays the hospital bills anyway. Then a month ago, she was brutally murdered when she witnessed something she shouldn't have. But nobody knows why she's still lingering around the world instead of crossing to the afterlife. Park Chaeyoung's life was perfect. She had a perfect fiance, perfect group of friends, was popular, was sweet, her co workers loved her, and she maintained justice as a profiler for the FBI. Until three months ago when she was brutally murdered when she was investigating a case that will damage many celebrities reputations. But because she's so keen on taking revenge, she doesn't cross the afterlife but vows to get revenge and uncover what really happened but she may need help doing so. Jennie Kim was somewhere between the lines of depressed and average. She still hadn't gotten over her parent's deaths from three years ago. She still hands out flyers with their pictures on it,hoping someone might've seen them. All her friends and family left her. But she had a decent job as a secretary. Her life is ended when she is found sleeping in a place where -. Let's just say she was at a wrong place at a wrong time with wrong people. Anyway, she was killed while she is sleeping five months ago. Like Lisa, nobody knows why she hasn't gone on to the afterlife yet. Kim Jisoo was the famous actress who faced a tragedy. She had an even better life than Park Chaeyoung. But it all falls apart when somebody close to her finds out what she witnessed and kills her. Kim Jisoo is still haunted by her murder nine months ago and vows to catch whoever killed her and punish them.