A group of scientists land on a remote island in the Pacific Ocean to search for the previous expedition that disappeared without a trace and to continue their research on the effects of radiation from the Bikini Atoll nuclear tests on the island's plant and sea life. They learn to their horror that the earlier group have been killed and eaten by two mutated, intelligent giant crabs, who have also absorbed the minds of their victims and can speak telepathically in the voices of their victims.Members of the current expedition are then systematically attacked and killed by the monsters, which are now invulnerable to most standard weaponry because of the mutations to their cell structures. The remaining scientists finally discover that both giant crabs are the cause of the ongoing earthquakes and landslides on the island; they are slowly destroying the island, reducing its size. The scientists turn their attention to a way to stop the mating pair of monsters from reproducing.As the island continues to fall away into the Pacific, and after barely escaping from a laboratory that is about to collapse, the surviving trio witness up close one of the intelligent giant crabs, Hoolar, for the first time. Hoolar speaks to them via telepathy and vows to go to the mainland with her fertilized eggs when the island is gone (and the three scientists are dead) to feed upon on even more humans, absorbing those minds in the process. One of the remaining three then sacrifices himself in order to kill the monster and her unhatched brood.Following the giant's destruction, the two survivors embrace on the small portion of what remains of the island.
Question: How many people survived the collapse of the laboratory?, Answer: Intelligent giant crabs named Hillary spoke to them telepathically Question: What are the causes of the ongoing earthquakes and landslides on the island?, Answer: both giant crabs Question: Who land on a remote island in the Pacific Ocean?, Answer: Scientists Question: What gets destroyed?, Answer: the giant Question: How can the giant crabs speak in the voices of their victims?, Answer: Telepathically Question: What didn't he crabs eat?, Answer: The scientists Question: What systematically attacks and kills members of the current expedition?, Answer: monsters