Villian says head full of pudding

During a rainy day, and while their mother is out, Conrad and Sally, and their pet fish, are visited by the mischievous Cat in the Hat. Fun soon turns to mayhem, and the siblings must figure out how to rid themselves of the maniacal Cat.

In a marvelously animated version of one of the most beloved of all Dr. Seuss tales, two youngsters find themselves at home with nothing to do on a rainy afternoon. But when the magical, mischievous Cat in the Hat arrives on the scene, they're all cat-apulted into a day of rousing, romping, outlandish antics they - and you - will never forget!

Three wealthy children's parents are killed in a fire. When they are sent to a distant relative, they find out that he is plotting to kill them and seize their fortune.