Faced with early retirement and difficulty recruiting, Stone is forced to lower his standard of acceptance. When a vicious, military-trained group of criminals commit a chain of big-time robberies, the Flying Tigers are called into action o...
飞虎队员阿坚在警方的安排下，成功打入黑社会内部，做起了卧底，黑社会老大肥叔始终怀疑阿坚的身份，屡屡找各个机会来试探阿坚，但阿坚都化险为夷，香港黑社会四大家族火拼...
韓堅臨危受命，調動人手圍剿匪賊，警匪雙方展開激烈槍戰，Stone帶領飛虎殺入倉庫，韓堅則在外圍支援，可是季的手...
