This film is a Chinese variation on violent American films like DELIVERANCE and SOUTHERN COMFORT. A group of teenagers on a camping trip meet up with a group of backwoods degenerates (referred to as "disco boys" in the subtitles) who rape one of the girls (watch her brush her teeth with toilet water in the hospital) and impale one of the guys on bamboo spikes. One of the locals fingers the gang who then take revenge on the guy by getting him drunk and burying him in a shallow grave. Another guy finds him and takes violent revenge on each of these drooling idiots. This is grim and bloody stuff but frenetic enough to pinpoint this as a Hong Kong film. Having one of the gang be retarded was lifted right out of I SPIT ON YOUR GRAVE. One entertaining element was the wholesale unauthorized use of early 80s American pop music by Supertramp, the Police, Styx and others.
