The Boy and the Heron has a beautiful, secret backstory

There's something Aristotle said in his Poetics about the effective use of metaphor. Boiling it down, he observed that while coming up with metaphors takes genius, overstuffing your story with beautiful — but confusing — symbols doesn't leave you with a timeless piece of art. Instead, you end up with "nothing but riddles or gibberish."

Apparently, no one told Hayao Miyazaki. 

Even more than his earlier movies, the Studio Ghibli founder's newest — and once again, after feigning retirement a decade ago, head-fake "last" — is a lesson in puzzling weirdness, stemming from virtually every aspect of its making. 

That movie, The Boy and the Heron, is a moralistic fable six years in the making, inspired by a once-banned book  — but telling a completely different story. Meanwhile, the book in question was a somewhat accidentally written textbook by a former political prisoner, made in order to teach Japanese school kids about friendship, Napoleon and deontological humanism. 

And there is so much going in this story it is easy to get lost — even as, on the surface, it follows the typical-Ghibli theme of coming-of-age self-discovery, all wrapped up in a fantasy-coded package. 

But despite everything working against it, Miyazaki may just have beaten Aristotle. Because as indecipherable as it may seem, there is a beautiful logic working under the surface.

Here we follow 12-year-old Mahito Maki as he and his father move to countryside following his mother's death. Though this is set in 1943 Japan, war is mostly on the outskirts of our story. Instead, we focus on Mahito's polite, but standoffish, relationship with his father's new wife (his late mother's younger sister) and a roving band of maids working in his new home. 

That is, until the roughest-voiced movie bird since Iago comes to invite him into a nearby tower; a tower giving off just about as much warm and welcoming vibes as The Shining's Overlook Hotel. 

What follows is a Through the Looking-Glass type tale as Mahito is transported to a fantastical land where his sense of duty to others, and his relationship with his mother, is probed and often outright challenged. Its a formula seemingly plucked right out of Over the Garden Wall (itself inspired by Ghibli's first box office smash Spirited Away), but actually right at home in Japan's "Isekai" genre.

Though that genre is defined by characters being dropped into fantasy worlds as a vehicle for introspection, The Boy and the Heron pushes the envelope on how much hinted-at meaning you can throw at westerners before they fall asleep. 

We get an army of human-sized, man-eating budgies, following a sword-wielding king into an ill-explained war. We see flying "warawara" (picture a marshmallow with legs) flying up to be born Soul-style, only to be picked off by talking pelicans and a superpowered little girl. At one point, we get a backstory of the tower which involves the Meiji Revolution, at least a couple of ghosts and a magic meteoroid. 

But as esoteric as it sounds, it all has meaning. Like Cormac McCarthy's The Road was made for a son he had nearly in his 70s, Miyazaki made The Boy and the Heron for his grandson. And similarly, his intent was to leave a message about life to a child whose own life he would largely miss. And while McCarthy's post-apocalyptic novel (about the meaning of bringing life into a world you're watching die) took a decidedly pessimistic view, Miyazaki goes the opposite way.

The story of The Boy and the Heron is inspired by the Japanese classic novel How Do You Live?, but they don't tell the same story; the book follows 15-year-old "Copper" (nicknamed after Copernicus) in the wake of his father's death.

In a series of vignettes, he questions whether a classmate is a lesser person because he lives in poverty, experiences how to be a good friend in difficult situations and wonders what makes a person great. At the same time, his questions are answered in philosophical essays from his uncle; a Zen and the Art of Motorcycle Maintenance format that works more as an instructional booklet on life than a narrative.