In 1889, the town of Rejection, Nevada, depends on a nearby silver mine for its income. Rejection has a few residents. Christine Lord runs the local inn, which doesn't get a lot of business because Carson City is the busiest settlement in the area. Pyong Lien Chang, his wife Lu Wan Chang, and his son Fu Yien Chang are immigrants from China, and they own Chang's Market. Other residents include Old Fred, Brick Walters, Stony Walters, Big Horse Johnson, Soggy, miner Juan Pedilla, and Christine's...

A small town gradually becomes aware of a strange creature which picks off people one by one. But what is this creature, and where is it? At the same time, a seismologist is working in the area, she detects _tremors_. The creature lives underground, and can 'pop up' without warning. Trapped in their town, the town-folk have no escape.

The giant, man-eating Graboids are back and even deadlier than before, terrorizing the inhabitants of a South African wildlife reserve as they attack from below-and above.

When an army of Graboids - giant, carnivorous underground worms - threaten the Petromaya oil refinery in Mexico, its owners call on Earl Bassett, who once helped kill four of the creatures in Perfection, Nevada. Having squandered the money that came from his resulting celebrity status, Earl is convinced by the $50,000-a-head bounty offered, as well as the enthusiasm of admirer Grady Hoover, who becomes his partner. At Petromaya, Earl and Grady meet geologist Kate Reilly, and begin Graboid...

Third Tremors movie takes us back to the small Nevada town of Perfection where local resident and adventurer Burt Grummer returns after traveling abroad and killing carnivorous worms called "Graboids" (introduced in the first movie) and their offspring "Shriekers" (introduced in the second movie) to life in his home town and must deal with some crooked land developers, a thrill-seeking guy named Jack Sawyer looking for wealth in this potential tourist town, and eventually dealing with a new...