A bizarre string of murders takes place in Luzhou City. All the victims are young female violinists. There are no signs of sexual assault, and each victim's heart has been removed. Cheng Fei, captain of the criminal investigation team, finds no useful clues at the crime scenes. The murder weapon appears to be a medical scalpel. The only witness saw a gray car at one of the crime scenes. After painstakingly piecing together the clues, the police identify three suspects: surgeon Lou Ziqiang, private clinic doctor Ma Youxin, and psychological clinic owner Du Liqun. But none of them is the real killer. Just when Cheng Fei is despairing, a young boy helps him. Everyone calls the boy Mai Zi. Mai Zi has an astonishing sixth sense and extrasensory abilities, as well as the power to unconsciously reorganize memories. His visions affect Cheng Fei, and he and Mai Zi develop a strange connection in their dreams. At last, through this mysterious connection, they solve the bizarre murder case that has gone on for five years.
