Teenage truck driver Sanya, who has worked in a quarry with his parents his whole life, accidentally meets some city dwellers: another truck driver and a street sweeper. These new acquaintances open up a vast, wondrous world beyond the quarry, which is suddenly threatened by a raging volcano in the mountains.
Now Sanya and his friends must figure out how to conquer the elements and convince all the trucks to unite before it's too late.
