The criminal investigation captain Hong sword according to informants to provide clues uncovered people smuggling, intended to keep several leaders put long-term catch out behind the big boss, but didn't expect a leader was assassinated, whirling an informant was forced to jump off the cliff, cases, are not clear, what is more, the back one after another and a few women were the assassination, was the same way. Who is behind the scenes, Jian withstand various pressures finally cracked the case.