Brother Long (played by Ke Junxiong), the boss of the underworld, sent the killer Allen (played by Alan Tam) to assassinate the drug Lord, which aroused the dissatisfaction of the two white wolves (played by Gu Feng). Xu (played), a subordinate of White Wolf, wants to start his own business, secretly trades drugs under the pseudonym of White Wolf, and uses the weakness of Grandpa (played), the second son of Long Ge, to force him to transport drugs. In the ensuing chaos, Brother Long was killed by Aju (played by He Jiaju), and Xu led his men to wipe out the Dragon Family and its underworld forces. In the bloody mourning hall, the four sons of Long Ge, Hua (played by Andy Lau) and Hua's mother (played), escaped. Fortunately, neither the bodyguard (played by) nor Brother Long's sixth son Cong (played by) was present. When Iowa, Allen and Cong went back to find their mother, Xu's men rushed over and set fire to their mother. Then the three brothers found Aju and forced Aju to lead the way to Xu. Finally, the three brothers killed Xu together and avenged their parents and family.