Forensic Senior Chemist Yu Sing-pak, Crime Unit Inspector Tseng Ho-yin, and Pathology Doctor Fan Pui-ching form the elite Crime-busting Trio. Together, they investigate bizarre homicides, using forensic science and pathology to uncover the truth and deliver justice.
While unraveling an enigmatic murder mystery, a special force leader realizes this case is related to the incident that took 28 years ago in a small town.
Eighteen years ago, on an ordinary night, seven teenagers, such as Lin Langsheng, Shen Jingyi and Xie Jiafu, who grew up in the estate, quarreled with the villager, Hu Qisi. After the fighting and chasing in the night, Qi Si fell in the pool of blood and died. They ran into a catastrophe and decided to bury the body, praying that this secret will never be known. Over the past 18 years, they have all grown up and established their own careers and lives. However, Qi Si's body was discovered and the secret of that year was unearthed. Inspector Ruan Lijin of the serious crimes team took over the homicide case and gradually revealed the truth.
In Shanghai in 1941, a spy stationed at No. 76, the secret service during Wang Jing Wei's puppet regime, is in danger of being exposed. At this time, a woman barges into his life with two children, and they must pretend to be a family to keep up a front.
Fang Jia Shu and Tao Yu Ling, a woman who was meant to be his wife since childhood, are both agents of the Communist underground. They have to try everything they can to ensure that all the members of their little family "perform well" in their roles in order to keep their identities safe. It proves to be no easy task given the suspicions from Li Li Xing, the head of No. 76 and intelligence director Ye Xing Cheng.
Fang Jia Shu also has another identity as a Juntong agent, which is complicated by fellow agent Su Ya Lu who is in love with him and team leader "Silver Fox" who is secretly monitoring his every move. Even in such a situation, Fang Jia Shu skilfully navigates different interests to complete his mission.
Brata, a troubled young detective, is investigating a mutilation. When Vera, a forensic doctor, examined the body parts, she discovered that they came from 5 different victims.
Rin Asōgi may look like an ordinary office lady on the outside but she is actually a private investigator taking on any jobs, from finding a stray cat to infiltrating a high-security corporate lab. What's more, she appears literally indestructible, supernaturally healing any injuries and mutilations. Together with her partner Mimi, Rin delves into the darkest secrets of the society but the ones she hides herself are by far more sinister...
Shōtarō Tatewaki is a normal high school student with a serious demeanor hangs around with Sakurako Kujō. Sakurako is an extraordinarily beautiful woman in her mid-20s from a rich family who loves "beautiful bones." The two live in the city of Asahikawa in Hokkaido, and they get involved in various incidents regarding bones.
Ji-Na works as a contract employee at a hotel. She appears to live a normal life, but, internally, she is filled with an inferiority complex. One day, she hears that her older sister Ji-Hyun is missing. Ji-Na goes to Rose Mansion Apartment, where her parents live. There, she faces unexpected cases. She can't trust the residents at Rose Mansion, who seem suspicious. Ji-Na seeks out the truth in her sister's disappearance with the help of Detective Min-Soo . Min-Soo is the only one who believes Ji-Na.