When the seaside community of Amity finds itself under attack by a dangerous great white shark, the town's chief of police, a young marine biologist, and a grizzled shark hunter embark on a desperate quest to kill the beast before it strikes again.
A petty criminal fakes insanity to serve his sentence in a mental ward rather than prison. He soon finds himself as a leader to the other patients—and an enemy to the cruel, domineering nurse who runs the ward.
This film is a revealing portrait of a tough cop with a big heart. Sergeant Bernie "Whistling" Smith walks the beat on Vancouver's Eastside, the hangout of petty criminals, down-and-outs and a variety of characters.