Mrs. Pteranodon takes Buddy and Tiny to visit Mikey Microraptor, one of the smallest of dinosaurs.
An evil WordGirl copy is on the loose to make it look like WordGirl has turned to a life of crime.
Martha tries to use her powers of speech to take care of Helen and find a cure for her laryngitis.
Caillou visits a ranch and learns about horses. He practices a fire drill and has his face painted.
Sid learns about pollution and learns that people and animals on Earth need to breathe clean air.
- A star from the heart-shaped constellation has landed in the Pinkerton backyard! Will they be able to return the star to its friends in the night sky?
- With Mommy's latest invention, the Opera-matic, anything you say sounds like opera! Until the machine suddenly breaks...
In the special, when Leo, Andy and Carmen get stuck at the South Pole with the performance troupe on Christmas Eve, the friends are convinced that Santa will never find them. With help from Luna, the kids endeavor to save Christmas, learning about gift-giver traditions and holiday customs from around the world along the way.