a federal police detective in the tragic death of Detroit 's Mean Streets , when the in-depth investigation and found his death with a million weapons robbery , all eyes turned to his partner - the hardcore style of street style , but a bit untrustworthy undercover detective Derek Wan En ( Samuel L. Jackson played ) . En Wan was ordering to find out all the stolen firearms within 24 hours , but also to find the murderer to kill partner , all his support , however , but a look bad relative to the sales staff , this task is really Beadon days harder !