One of the Shaw Brothers' best, and most underrated, directors, Kuei Chih-hung (Boxer's Omen) made his directorial debut with this attack dog of a film that leaps off the screen and goes for the audience's throat. Chang Cheh is listed as co-director, but he really just slapped his name on to reassure Run Run Shaw — every angry inch of this movie belongs to Kuei, from the opening credits of star Wang Chung smashing through photos of Hong Kong, to a final fish-eye shot from the POV of a dying man. One of the most aggressively experimental action movies ever to come out of Shaw Brothers, Kuei directed it like he'd never get a chance to make another movie, cramming in every wild idea he ever had. Wang plays an angry young man sweating to death in the grotty ghetto of modern-day Hong Kong, watching life pass him by one salty teardrop at a time. Throwing punches at the slightest instigation, Wang is recruited by a local gang and he has only one rule: never rob the warehouse where his dad works as a security guard. It takes about five minutes for that rule to get thoroughly violated, and after a long, tense, excruciating buildup, the film erupts into a final series of brutal fights that will leave you breathless. Truly feral.