Both sides race to track down a mammoth Brontosaurus to add to their ranks. The commandos manage to find the animal first, but Hammerhead and Skate show up with a hunting party and a potentially fatal tranquilizer. It's going to take some clever maneuvering for the good guys to get the Brontosaurus safely back to camp. Meanwhile, Krulos implements a subtle scheme to cripple the Dino-Riders' leadership.