Travel back in time 100 million years with David, Sequoia, and Matt to the age of the Dinosaurs. David's dad, Professor Thomas, has equipped his space ship with a time machine that whisks them back in time to a mysterious jungle. The kids explore the jungle around a deep swamp. They encounter many different huge and dangerous dinosaurs like a flying Pterodactyl, a gigantic Brachiosaurus, and a three horned Triceratops. Suddenly, from out of the jungle a deadly Tyrannosaurus Rex attacks. The kids must run for their lives. Their only hope for escape is to make it back to their space ship.