Treenie is seven years old and loves her doll Bear. She also loves her oldest sister and her brother, Violet and Dougie, who are always sweet and kind—at least on the weekends when they are home. Treenie feels somewhat less love for Becky, her surly, makeup-wearing, bug-fearing, 14-year-old sister who—like it or not—is home all the time.

But Violet, Dougie, Becky, and even Bear have secrets—lots of secrets. An entire world of secrets, as Treenie is about to discover in this young-adult novel. A spell goes wrong, and Treenie finds herself in the magical, strange, and dangerous land her siblings have dubbed The Weirld!