I have several that aren't what you are looking for, but I have to tell you, our fav book is The Runaway Latkes.
OK, I have one that is 10 pages long of the Chanukah story followed by a page of why we light the menorah and why we play dreidel. It is "Festival of Lights" by Maida Silverman and illustrated by Carolyn S. Ewing. DD did not like it much last year (too much narrative) but loves it this year.
We also have a scholastic book "The Eight Nights of Chanukah" by Judy Nayer. It is broken into the 8 nights with something to on each night...and the second night is the story and why we light the menorah.
All my other books do not tell the story, just mention that a great miracle happened there...
Hope that leads you to a good book!