Welcome to beautiful Thorn Valley, where the mice folk have everything they could possibly need... expect a hero. That's why they call upon Timmy Brisby, the youngest son of Jonathan Brisby who once saved them from an evil place called NIMH. There's only one problem - Timmy's a novice, so its necessary for him to go through Hero Training 101. He masters snake patrol and more, but before he even has a chance to graduate, Timmy must put his new skills to the test: a young mouse named Jenny needs help rescuing her parents from NIMH, and warns of a serious threat to the safety of Thorn Valley! Taking on NIMH is a big job for a little guy, but Timmy is up to the challenge and before he's through he's going to prove that no matter what one's size, anyone can be a hero. Featuring five original songs, adorable characters and the voices of Dom De Luise, Harvey Korman and Ralph Macchio, the charming adventure is a wonderfully heroic tale that will make your family want to stand up and cheer!