The Tale of Despereaux (2008)
Once upon a time... in the far away kingdom of Dor... lived a brave and virtuous mouse with comically oversized ears who dreamt of becoming a knight. Banished from his home for having such lofty ambitions, Despereaux sets off on an amazing adventure with his good-hearted rat friend Roscuro, who leads him, at long last, on a very noble quest to rescue an endangered princess and save an entire kingdom from darkness. based on novel or book, forgiveness, loyalty, totalitarian regime, mouse, honor, unlikely friendship, chivalry, animal lead, fantasy