if you know what this is, then your childhood had some cool movies. It also might be the only time a tractor has been portrayed as a movie's antagonist!

If you've got to here, without recognizing the movie, it's the Secret of NIHM - a masterpiece by Don Bluth, who was stifled by Disney, and led an exodus of animators away from a dying Disney animation studio, and they created their own, and made some really damn cool movies: Titan AE, All Dogs Go To Heaven, Anastasia, the Land Before Time

While at Disney, he worked on Sleeping Beauty, Robin Hood, and was the animation director for such films as The Rescuers and Pete's Dragon 

Steven Spielberg teamed up with Don in the late 80s for the films An American Tail and The Land Before Time, and Disney had NOTHING that came close to comparing. 

https://www.imdb.com/name/nm0089940/?ref_=fn_t_1