"While out exploring, Bobby and his friends discover dinosaurs! The friends, also known as The Four Musketeers, think that the reptiles "look like little T-Rexes." They manage to catch two and take them back to Bobby's house. They want to keep their discovery a secret until they can set up a "dinosaur show." They plan to charge admission and get rich! But Bobby's little sister, Missy, is a big snoop and an expert at getting the boys in trouble. Uh,...