Gun-toting Burt is back to take on the next wave of graboids and shriekers that threaten the small town of Perfection. The town folk are using the graboid legend as a basis for tourism when new monsters show up. As in Tremors 2, there is another mutation which results in flying monsters. Luckily Burt is still there with his arsenal and the town bands together to fight the monsters.
Other than Michael Gross as Burt, there are no main characters from the previous films, and is a step down from first two films.