Watch Young and Dangerous 4

Deep within the streets of Hong Kong's lost city, Jason Chan is leading a gang of young men who are set on destroying the current government of the city. When the British government finally turns the city over to Hong Kong authorities, their plans change. However, one of the gang's members, Kevin, decides that he wants to leave the dangerous life of crime and help people for a living. The gang leaders are not happy about it, and order a hit on his life in return. The consequences result in a series of chases through the crowded streets of modern day Hong Kong.