After a visit from her uncle, Sami spots something in the corner of her room that she's never seen before. It's a large brown box that is blank on the outside, but there's something inviting about it-and against her better judgment, Sami opens the box.

Inside, Sami discovers giant poles and an instruction booklet with pages that turn on their own. Once she puts the poles together to form a frame, Sami is sucked into a foreign world. Here she encounters a house that seems out of place, a horse of unexplained intelligence, and a telescope that allows her to see through objects.

Hurried by...