In the very messy Cat's Playhouse, when the Cat in the Hat loses his bow tie, it's cleaning time! That is, if he and the Little Cats ever get around to In the Wubbulous World, we meet Matthew Katroom, who battles his messy room. And Yertle the Turtle sells Jane Kangaroo a new kind of mess-free Turtle Tree.

In the Cat's Playhouse, Terrence is being a picky eater, only wanting to eat red birdseed brickle. In the Wubbulous World, the King of Didd has outlawed Bimple Beans, Milo's favorite food, and Milo struggles to convince the king to keep the beans around. The Cat in the Hat also gazes at what everyone has for lunch in the Wubbulous World.

In the Cat's Playhouse, Little Cat Z is sick, and Terrence is afraid he'll catch his cold. It's up to the Cat and the Little Cats to show him how to stay healthy. In the Wubbulous World, Horton rescues and takes care of Sid Spider, much to the chagrin of Jane Kangaroo, who thinks that bugs are creepy and not friendly. We also meet Dr. Gazeat, who takes care of everyone in the Kingdom of Didd.

In the Cat's Playhouse, Terrence is visited by his brother Lester, who drives Terrence crazy. In the Wubbulous World, we see all sorts of families, and Sarah Hall-Small gets a new baby brother.

In the Cat's Playhouse, the Cat in the Hat wants to be a bird. In the Wubbulous World, we see how different creatures get around. Also, Sarah Hall-Small runs in a Seussville race where people use all kinds of ways to get around, including rolling and bouncing.