A very sweet film. It captures perfectly our struggle to coexist in harmony with nature and wildlife, as well as our destructive actions which harm ecological balance. However, this film doesn't have villians in the true sense for even the antagonists were victims of fate forced to take a drastic step, which I find to be a kind of foreshadowing of our own fate if we don't mend our ways before it's too late. The soundtrack seems to drive the entire message of this movie home.
A classic 90s Doraemon film, singing a song of better things to come set in a more innocent and hopeful world.