This one is a graphic novel. I would NOT recommend this one, nor will I be reading its sequel. The illustrations were great, but I thought the plot was seriously lacking, or at least had major holes in the storyline. It's about mouse soldiers defending their hidden kingdom, and I got the distinct feeling that the author had this whole world and epic novel in his head and just couldn't get it out on paper.
For a more complete review, check out Bookshelves of Doom.