Hayao Miyazaki is a great animator, and his "Princess Mononoke" is a great film. Do not allow conventional thoughts about animation to prevent you from seeing it. It tells an epic story set in medieval Japan, at the dawn of the Iron Age, when some men still lived in harmony with nature and others were trying to tame and defeat it. It is not a simplistic tale of good and evil, but the story of how humans, forest animals and nature gods all fight for their share of the new emerging order. It is one of the most visually inventive films I have ever seen.

The movie opens with a watchtower guard spotting "something wrong in the forest." There is a disturbance of nature, and out of it leaps a remarkable creature, a kind of boar-monster with flesh made of writhing snakes. It attacks villagers, and to the defense comes Ashitaka, the young prince of his isolated people. He is finally able to slay the beast, but his own arm has been wrapped by the snakes and is horribly scarred.

A wise woman is able to explain what has happened. The monster was a boar god, until a bullet buried itself in its flesh and drove it mad. And where did the bullet come from? "It is time," says the woman, "for our last prince to cut his hair and leave us." And so Ashitaka sets off on a long journey to the lands of the West, to find out why nature is out of joint, and whether the curse on his arm can be lifted. He rides Yakkuru, a beast that seems part horse, part antelope, part mountain goat.

There are strange sights and adventures along the way, and we are able to appreciate the quality of Miyazaki's artistry. The drawing is not simplistic, but has some of the same "clear line" complexity used by the Japanese graphic artists of two centuries ago, who inspired such modern works as Herge's Tintin books. Nature is rendered majestically (Miyazaki's art directors journeyed to ancient forests to make their master drawings) and fancifully (as with the round little forest sprites). There are also brief, mysterious appearances of the spirit of the forest, who by day seems to be a noble beast, and at night a glowing light.