One short week before the annual 4th of July celebrations, Martin Brody, the new police chief of the small summer resort town of Amity Island, has reasons to believe that the mangled body of the missing young swimmer found washed up on shore is the work of a predatory shark. Worried about the unsuspecting tourists, Brody insists on closing down the beaches; however, greed, and Mayor Larry Vaughn, get in the way of security, only to spark a series of additional bloody attacks. Now, all eyes are on the deep blue ocean, while Brody, along with the marine biologist, Matt Hooper, and the expert shark killer, Quint, hunt for the undisputed ruler of the sea: a monstrous, slate-grey great white shark that patrols the waters, hungry for human flesh. But, can they outsmart the ultimate aquatic man-eater, and escape from its massive jaws?