The priceless Zubble-Wump egg has been in Megan Mullally's family for as long as anyone can remember, so when the Grinch steals it, she sets off with Horton to get it back. The egg is on the verge of hatching, and no one may get to hear the Zubble-Wump's exquisite song unless Megan and the Grinch stop being so greedy.

The beloved Snoozer statue is missing, and there is only one suspect: Yertle the Turtle. Jane Kangaroo is convinced that Yertle is guilty, and when Horton the Elephant comes to his defense, Jane assumes that they are in cahoots. So what happened to the statue? It didn't just get up and walk away, did it?

The Cat in the Hat has left Little Cats A, B, and C alone with a nifty storytelling machine, and when they insert a backscratcher, they hear the story of how the Grinch and his dog Max came to be friends. When they insert a half-eaten cake, they are told the story of Alvin, an alien from Malamaroo. Alvin is as sweet as can be, but he drives Jane, Junior, and Thidwick crazy when he never finishes what he starts -- including his trip home!