Betty falls asleep doing a jigsaw puzzle and finds herself through the looking glass into a modern, urban wonderland. The shrinking potion comes from a "Shrinkola" dispenser. When most of the characters assemble, Betty sings "How Do You Do" to them. But the jabberwock steals Betty away.
Unfortunately the movie Betty in Blunderland is not yet available on HBO Max.
| Directing | Dave Fleischer | Director |
| Visual Effects | Roland Crandall | Animation |
| Visual Effects | Thomas Johnson | Animation |
| Visual Effects | Roland Crandall | Animation Director |
| Production | Max Fleischer | Producer |
