If you've always had magical powers, it's a dreadful shock to find yourself without them, especially when you're only three inches tall.
This is what happened to Thumb and Thumbling when they annoyed King Oberon.
He took their powers, imprisoned them in nutshells and banished them to the world of mortals.
Their problems were enormous -- literally. Even fleas seem huge when you are so small. Mice are far worse, and people worst of all.
In the past, Thumb and Thumbling had delighted in playing tricks on mortals but now the joke was on them, it didn't seem nearly so funny.
Then they learn of a solution but it's as terrifying as the problem --