The Tyrannos find a hidden valley of dinosaurs in South America and intend to enslave them using mind control collars.

The Secret Scouts teach the Dinosaucers how to play baseball at the Houston Astrodome. When the Tyrannos, in search of the world's largest diamond, show up to do battle, the Dinosaucers wind up using their new skills to defeat them.

The Dinosaucers and other Secret Scouts are preparing for Paul's surprise birthday party, when the Tyrannos sneak into the Dinosaucers' base to find out the secret to dinovolving.

Bonehead and Stego sneak out to visit a movie studio and get mistaken for costumed actors.

When Allo and David go to New York about a new source of energy, Bronto Thunder decides to go there too with Sara keeping an eye on him. The Tyrannos show up and they do battle at the Statue of Liberty, resulting in David getting devolved and wreaking havoc on the city.

Sara and Bonehead go to Hollywood to visit their favorite TV superhero, Mr. Hero.

The Tyrannos steal a truckload of hamburgers, thinking they are gamma cells, to power their earthquake machine.

The Secret Scouts teach the Dinosaucers about camping and the outdoors. The Tyrannos take this opportunity to attack them, leaving the Dinosaucers to rely on their new skills in order to escape.

Teryx has invented a gadget that can manipulate the size of just about anything...including people. And when she, Bronto Thunder, Allo, Brian, and Sara wind up on the recieving end of the 'Shrink' setting, they've got to try and find a way to change themselves back while trying to ward off the Tyrannos!