An engaging fantasy, whose matter of fact tons one of the British writers, C. S. Lewis and P. L. Travers, accounts for the summer of Ricky and Joanna and the time they have after they go through the window in their uncle's study, in search of their cousin Emmeline's lost turquoise. Uncle Hubert, an unsuccessful magician, has had contact before with those beyond his window, in the Country Without a Name. As Ricky and Joanna are sent down the rope ladder by the housekeeper, Mrs. Breadloaf, a new world of mists and adventures awaits them on their quest. The characters they meet, the places they visit and the ordeals they undergo make the wonders of imagination their new treasure.