Don Bluth's first big screen effort under his own name after splitting from Disney, along with several other Disney animators and artists, in order to try to return to the kind of groundbreaking style and commitments to storytelling that their former company had been skimping out on during the 1960s and 1970s.  THE SECRET OF NIMH adapts Robert C. O'Brien's 1972 book, "Mrs. Frisby and the Rats of NIMH", and makes an interesting animated allegory for the experience these artists went through on their quest for independence and destiny.