Lee Ying, who is the chief inspector of Regional Crime Unit, is newly promoted to Royal Hong Kong Police Cadet School as Deputy Commandant. He confronts a group of youngsters of different social backgrounds, turning them into self-disciplinary and self-contained young men.

An aging crime boss discovers his rebellious daughter is dating a punk. His former gang members try to bring her back using tricks and force, only to find out the punk is tied to the drug business in America, and is not to be messed with.