In the tradition of the Susan Cooper books, and other such fantasy children's classics, a pair of siblings are dropped off at the mysterious old house of a distant relative for the summer. The children are Seth and Kendra, the place is Fablehaven, and yes, it is full of magic. Unbeknownst to them, Seth and Kendra's grandparents custodian a preserves of enchanted creatures, some benevolent, some malign. Seth is wild to discover all he can and in the process breaks some terrible fairy rules that place the whole family in mortal danger. It is up to tentative Kendra to brave the dangerous woods- or lose all the people she loves.