Final answer:
In 'Escape from Mr. Limoncello's Library', children are engaged in a puzzle game trying to find a word that would allow them to escape the library.
Step-by-step explanation:
The children in the book Escape from Mr. Limoncello's Library are searching for a specific word that acts as a key to escape the library. The suspenseful narrative revolves around a game consisting of puzzles, where the children must decipher clues and work together to find the word hidden within the library. This challenge is comparable to that of large words on a map being overlooked due to their obviousness, which is a theme touched upon in other literary works.