A police chief, a marine scientist and a fisherman spring into action after a white shark terrorises the inhabitants of Amity, a quiet island.

Post the shark attacks that horrified the residents of Amity, trouble returns to the town when a man-eating shark begins to lurk on the beaches of Amity.

A group of marine biologists attempt to capture a young great white shark. Later, chaos follows when its ferocious mother breaks into the marine centre in order to avenge the death of its baby.

The island community of Amity is terrorised by shark attacks when a vengeful shark returns to avenge the death of her progeny.