In every person, there is hatred planted in their hearts. If they don't have a light that guide them on the right path, they will indeed turn evil. Hatred and anger is the greatest source of serial killings and murders. Once that seed is planted, it will flourish and grow into something unstoppable. Despair is part of what this kind of feeling will bring to a person. Betrayal is another source of anger that will lead to the death of many others. How can five investigators along with two forensics solve this case, when the murder is doing a profound job with his killings? Will they be able to solve the case, or leave it as an unsolved mystery? What happens when they find out that this case was similar to one in the United States? How are the two cases related and what is the killer trying to tell them?

Casts:
Wu Ying Jie (Gui): A hard working investigator. She is amazing and always solves her cases. Everyone adored and admired her. But a serial case will leave her speechless. How will she be able to solve the case? Will she ever be able to bring peace into the city or will many die under the hands of the killer?

Yan Ya Lun (Aaron): Gui's boyfriend and an investigator. He is always worried about her since she always puts her life in danger, but he's always there to protect her. He witnessed another side from Gui, when an unsolvable case was thrown their way? Will he be able to help his girlfriend solve this case or will they lose to the killer?

Wu Chun (Chun): Gui's older brother and an investigator in her department. He joined the police academy to save people from their evil doings. He's all for justice. Even though he opposed of his young sister joining the police academy, he still supports her. He is also involved in this case. How will he solve this case that is bringing his sister down?

Chen Yi Ru (Calvin): Aaron's colleague. He works with them in the investigation team and helps them with information. He is the computer genius of the group. How will his computer genius and hacking skills help them with the case that they are involved in?

Wang Dong Cheng (Jiro): Aaron's colleague. He is part of the investigation team. But due to a misunderstanding, he was suspended. But when he returned, he finds that they are on a case that needs his help. How can he help them with the case that Gui desperately wants to close down?

Huang Hong Sheng (Xiao Gui): He is part of the forensics team, but he would always follow Gui them on a case. He was great what he does, but when he gets victim that leaves no clue, except for their profiles, he is dumbfounded and feels helpless. What happens when Gui ask him to help them with case?

Qiu Yi Cheng (Mao Di): An intern in the forensics department. As a child, he always wanted to follow his father's footstep, who was killed during a mission. He feels that being part of the forensics, he can help others. But what happens when he is involve with a case that his colleague is solving? How will he responds to this, when the scene of his father's death comes to play?