The fire seven years ago burned all Xie Lin's memories and took away the deepest bond between him and Cheng Jiwu. Now, Xie Lin returns to his hometown as a stern forensic doctor, only to find that the wounds on each corpse look familiar - like the vague back in the memory fragments. Cheng Jiwu, once his best friend, has now become a silent witness at the heart of the unsolved case. When the police identified Cheng Jiwu as the arsonist, Xie Lin read a secret code in the autopsy report that only the two of them understood. He must uncover the truth buried in the fire before his memory disappears completely: who burned their seven years and why?
