"Engine of Change" is the third book in the "Rube Goldberg and His Amazing Machines" series, aimed at young readers. In this exciting story, Rube Goldberg discovers a massive machine being built by the Null Corporation in his beloved junkyard. When he receives anonymous messages, he decides to team up with his friends to uncover the mysterious intentions of the company. The narrative combines adventure with a touch of humor and sparks the imagination as the protagonists attempt to reveal the truth behind the machine. This book not only promotes reading enjoyment but also encourages critical thinking and problem-solving skills in children. It is a captivating read that ignites the curiosity of young readers and inspires them to think about the world of machines and how they work.