The sparkling waters around the tropical island of Malau attracts surfers, fisherman, and tourists from all around the world. Now they've attracted something else. Something big...and incredibly dangerous.

It begins with an earthquake, and the mysterious deaths of two young women. Local authorities are baffled by the tragedy, until a visiting American scientist realizes that the tremors have driven an unknown creature up from the ocean depths..and there may be more than one.

Soon the entire island will tremble beneath the thunderous tread of a gigantic mutated behemoth, the likes of which the world has never seen. No warning, no scientific theory can prepare mankind for the awesome reality of...Gargantua.