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?

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?

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 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!

Buddy and Tiny tour the Dinosaur Train and earn their Junior Conductor hats while their friend Ned, a four-legged, long-necked Brachiosaurus and regular Train rider, tags along.

Buddy and Tiny want to test their memory, so they ride the Dinosaur Train and spend some time with the Conductor, since he’s a Troodon with a great memory. The kids get to meet the Conductor’s mom, Mrs. Conductor.

Buddy and Tiny ride the Dinosaur Train to meet Petey Peteinosaurus, a “flying lizard,” who is fun, funny, and friendly, and has some features similar to both Buddy and Tiny!

Buddy, Tiny, and Mom ride the Dinosaur Train to meet Oren and Ollie Ornithomimus, some of the fastest dinosaurs ever! The kids love meeting the fast-moving and fast-talking twins.

When Buddy loses a tooth, Mom takes him to Rexville to ask his Tyrannosaurus friends all about T. rex teeth. They explain that he’ll grow new teeth to replace the old ones.

Dad gives Tiny and Buddy a mystery feather and the kids become “detectives,” riding the Dinosaur Train to meet Valerie Velociraptor, who shows the kids what it’s like to be covered with beautiful feathers.

The kids help Tank Triceratops overcome his awkwardness with having a huge head by showing him how cool and amazing his features are, especially his frill.

Tiny and Buddy visit a dinosaur family called Argentinosaurus, some of the biggest land creatures ever! The kids find out there are great things about being really big, and that it’s also great being their own size.

Buddy is excited that his friend Annie Tyrannosaurus is coming to the Pteranodon nest to visit and play. After Tiny feels left out, Buddy and Annie show her that they can all be friends!