‘Epic’ a children’s fiction makes wave

In the just-opened animated adventure 3D film, “Epic,” a teenage girl named Mary Katherine (voiced by Amanda Seyfried) has effectively been abandoned.

She arrives in the country to reconnect with her harebrained dad (Jason Sudeikis), a nerdy scientist obsessed with finding a woodland kingdom of miniature creatures. Grieving the loss of her mother, Mary Katherine, or “MK,” needs her father more than ever. But her dad’s belief in a secret world makes him all the more distant.

Naturally, MK’s ideas about magical realms are about to change. Stumbling into the woods, she snatches what looks like a glimmering leaf as it drifts down from the trees.

The “pod” glows brighter in her hands, and then, KA-POW! our heroine is transported (and shrunk) to the hidden land of the Leafmen.

There, she finds her purpose among a race of tiny people who, armed with bows and swords and mounted on sparrows and humingbirds, protect the forest from the baddies in, yes, an ongoing battle between the forces of good and evil.

Movies about worlds disconnected from our own are commonplace. Think of the many science fiction and fantasy narratives that lie along the “Star Wars” to “The Lord of the Rings” continuum.

These separate realities are filled with orcs and wizards, siths and spaceships. Humans may live there, but we Earthlings can’t visit them. No magic door leads from Boston to Tatooine, no trip down a rabbit hole or along the Red Line arrives in Middle-Earth.

“Epic” belongs to a different but equally longstanding tradition of fiction that bridges our world to other realms.