Vroom-Town is a wonderful place where all types of trucks with all types of personalities live, work and have exciting adventures. This is the third book in the series! In this story, Screech's cousin, Sparkle comes to visit. When they go to a party in Quentin's Quarry, they get more than they bargained for! Terrible Terry and BullyDozer play a dreadful trick on the two young trucks and they end up trapped in a cave! Will they escape? Will their friends find them? What will happen...? You will have to read the book to find out!