Wan Wenfang was assassinated in Hong Kong during her performance. The suspect is a young man. Lawyer Duan Mulan took over the case and was ready to start the investigation, but in the process of investigation, she found that the prosecutor of the case is her former lover Wu Zhengwei. At the same time, she found the case to be suspicious, so she went to the young man's home to seekthe truth, and fell into a series of trouble.