The Tale of Despereaux by Kate DiCamillo is a heartwarming story about a brave and adventurous mouse who embarks on a quest to save a princess from an evil rat. Along the way, Despereaux meets a variety of characters, including a kind-hearted rat
From Wikipedia
The Tale of Despereaux is a 2003 children's fantasy novel by American author Kate DiCamillo. The main plot follows the adventures of a mouse named Despereaux Tilling, as he sets out on his quest to save a captured human princess from the villainous rats. The book won the 2004 Newbery Medal award and has been adapted into a film and a video game loosely based on the book, as well as a stage musical.