An seemingly small story unfolds into a mysterious world of experiments and hidden societies, brought to life through rich, detailed animation.

The film follows Mrs. Brisby, a widowed mouse desperately searching for a way to save her sick son as the field they live in is about to be plowed. Her journey leads her to a mysterious colony of rats, with whom she shares an unexpected connection—one that traces back to experiments conducted at the institute known as NIMH.

As the directorial debut of Don Bluth—who left Disney with a group of fellow animators to bring this project to life—the film stands out for its bold, at times dark style and expressive animation. With glowing eyes, looming shadows, and imaginative settings, The Secret of NIMH creates a world that feels both enchanting and unsettling—an influential classic that shows just how far animation can go beyond the familiar.