Buddy, Tiny, Shiny and Don have fun when their babysitter watches them for a night

As the Winter Solstice Celebration approaches, Mr. Pteranodon, Larry Lambeosaurus, and their new friend Mr. Seastar still can’t seem to find a way home. As Mr. P and Larry continue to argue, Mr. Seastar tries to remind them of the true meaning of the Winter Solstice Holiday – spending time with family and friends.

The whole Pteranodon Family takes a rollicking adventure on the Dinosaur Train Riverboat! Buddy and Don vow to spend every minute together, but while Buddy wants to spend all his time investigating the creatures on the river, Don wants to spend all his time playing games and investigating the buffet. Can they come to some kind of agreement?

While still rolling down the river on the Dinosaur Train Riverboat, Grandpa Pteranodon tells Buddy about the Legend of Admiral Globidens – a HUGE Mososaur that supposedly lives on the river, but no one has ever seen. Buddy enlists Dad and Tiny’s help to look for Admiral Globidens, but they can’t seem to find him. Does Admiral Globidens really exist, or is he just a figment of someone’s imagination?

Buddy, Tiny and Mom are riding the Dinosaur Train when they bump into their old friend, Crystal Cryolophosaurus. She’s on her way to visit King Cryolophosaurus down in the Jurassic Antarctic and invites our family along. Mom and the kids jump at the chance, and upon arrival surprise King as he’s singing a brand new song, Top Carnivore. King and Crystal’s heartfelt reunion is marred when Crystal tries to convince a reluctant King to take this fantastic new song out on the road to share with his adoring Mesozoic fans. But King doesn’t like leaving home and excuses himself to do some thinking. Buddy and Tiny follow and King sings a song called Good ol’ Gondwana to explain his feelings about his home. Tiny has a great idea—King and Crystal can perform a live concert in Gondwana and invite dinosaurs from around the Mesozoic to attend! The concert is a huge success, and King is surprised and delighted when Crystal decides to stay there with him instead of going back out on the road.

The Conductor takes the Pteranodon Family for a special trip to Lizard Island, where they discover that it’s been overrun by plants and bugs, and there are few precious lizards left. The Conductor concludes that the Changyuraptor Family (that he dropped off there awhile ago, and has since multiplied) has been eating all the lizards and throwing the entire ecosystem out of balance. Can the Pteranodon Family and Mr. Conductor convince the Changyuraptor Family to leave their home in order to get the island ecosystem back in balance?

With a hurricane looming, the Pteranodon Family convinces the Conductor to leave his train for the night and come with them to the safety of their hurricane shelter (a large, underground cave). But the Conductor has a hard time getting comfortable away from his train. Can the family and the Conductor pull together and help a family of beached Ichthyosaurs back into the ocean after the hurricane leaves them beached on the shore?

Tank Triceratops , who has 3 horns, wonders why Mayor Kosmoceratops has 15, and Protoceratops has only 1. The kids go on a quest to track down Ceratopsians with horns.

Mom, Tilly, Tiny, Shiny, and Annie visit the old neighborhood where they complete Mom and Tilly's unfinished adventure and meet Goldie Globidens.

When Mr. Pteranodon and Larry go out to the Big Pond to find some red platanoids for the Winter Solstice Celebration, they accidentally miss the last train home. Will Larry and Mr. Pteranodon stop bickering long enough to figure out a way home, or will they get stranded in the middle of nowhere and miss the family Winter Solstice Celebration?

Mom takes Tiny, Buddy, and Don on a super secret daytrip to Qianzhousaurus Pond, where they meet Quentin Qianzhousaurus – a Tyrannosaur with similar features to Buddy, except for one major thing – Quentin has a long, thin snout covered in tiny horns! The kids think that Quentin’s long snout gives him a super smelling sense, but after a series of tests, they realize that he and Buddy have the same sniffing power. Can Quentin and Buddy’s super sniffers solve the mystery of Mom’s secret daytrip?

The Pteranodon Family is excited to be going back to the ‘Classic in the Jurassic’! This time, it’s a race between pterosaurs from each of the three Time Periods. The best part—all of the family members will have a role to play in the race! Mom and Tiny will be in-air referees, Buddy and Don will do “play-by-play”, and Dad and Shiny will man the start and finish lines. It’s an exciting race as the pterosaurs fly between hanging vines, swoop through a canyon, push through a wind tunnel, slalom over and under branches, then carry food from a pond as they race to the finish line! Teddy Pterodaustro finishes first, but the race is contested when Remy Rhamphorhynchus (another competitor) protests that Teddy never retrieved a fish from the pond. Everyone is surprised to learn that Perodaustro don’t eat fish, they strain plankton through their bristle teeth. Teddy shows everyone how he does it to prove that he did indeed get food from the pond! Teddy is declared the winner!

Shiny and her friend Annie disagree when Shiny gets scared while exploring a cave. Mom's and her friend Tilly tell the kids about the time Mom got too scared to complete one of their childhood adventures.

The Conductor’s nephew Gilbert has been taking Conductor courses at the Troodon Academy, and has finally graduated to Cadet Conductor! The kids are thrilled – will Gilbert get his own Dinosaur Train to conduct?

The Conductor and the kids are out digging in a favorite fossil spot. Buddy turns up something that the Conductor doesn’t recognize. They may have discovered a whole new Jurassic species!

During a visit from their friend Mikey Microraptor, the kids go looking for an even smaller dinosaur.

The Pteranodon Family decides to take a little vacation and swap nests with Larry’s friends: a family of pterosaurs (Nemicolopterus, to be exact). But when the Pteranodon Family arrives at the Nemicolopterus nest, they realize that the Nemicolopterus Family is MUCH smaller than them, so everything is smaller: the Pteranodon Family doesn’t even fit in their nest! Can the family make do, try something new, and still have a good time?

Tank Triceratops is really excited to show Buddy, Tiny, Shiny, and Don his favorite picnic spot, but when they arrive, the spot is overrun with a whole herd of Triceratops. Tank and the kids try to find another place with a little more privacy (and a lot less Triceratopses), but no matter where they go, the herd follows them. Will Tank be able to find a quiet spot without the herd, or does the herd have a good reason for following Tank around?

Buddy wonders if he’ll grow horns when he gets older, so Mrs. Pteranodon takes him to visit some dinosaurs called Stygimoloch, who have really impressive horns.

After Mr. Pteranodon teaches the kids his fishing method, Buddy and Tiny work together as a team to catch fish in the Big Pond.

The family surprises Mom for her birthday with a trip to a concert given by Cory and her family of Corythosaurus, who play music through the crests on their heads.

Our Pteranodon family eats lunch with their friend Tank Triceratops and discovers that he and his family are all plant-eaters, with great leaf-eating teeth and giant appetites!

Buddy and Tiny travel to the Jurassic to make a new friend, Morris Stegosaurus, and discover how this huge dinosaur keeps cool in the heat.

The kids go to the Big Pond to look for flowers to give to Mom on her special Mothers Day. They find many different flowers while following a very busy bee.

Buddy travels to Rexville on the Dinosaur Train and meets Delores Tyrannosaurus and her daughter Annie. When he sees that he shares all the same features, Buddy learns that he is a Tyrannosaurus rex!