Mouseheart
When Hopper escapes from the pet shop and makes friends with Zucker, the crown prince of Atlantia, he is faced with helping them solve an enormous injustice within their government's diplomatic relations, and Hopper must struggle to discover qualities he didn't know he had. Zucker, crown rat prince of Atlantia, located below New York's subways, curiously sneaks outside the city walls one day only to be saved (from one of their own cat guards) by a courag...