The only thing I have to say about this is, what the blazes was MGM thinking? I mean, on paper, this seems like a good idea. The story behind it is a somewhat good idea, but the overall presentation really blew it out of the water.
Not only did they completely destroy the legacy that The Secret of NIMH left behind, but they turned this into a pointless musical. Really, were all those horrible songs necessary? I don't think so.
Plus all the older characters were completely screwed up. To name the main ones, Auntie Shrew and Justin who was my favorite from the first NIMH. You can tell MGM didn't do their homework on this and this presentation shows it. The only character I took a liking to (sort of) was Jenny.
If I were you, I'd just go out and find the first NIMH and forget this one ever existed.