"Urban is no longer master of the fearsome starship Dragon. Driven out by the hostile, godlike entity, Lezuri, he has taken refuge aboard the most distant vessel in his outrider fleet. Though Lezuri remains formidable, he is a broken god, commanding only a fragment of the knowledge that once was his. He is desperate to return home to the ring-shaped artificial world he created at the height of his power, where he can recover the memory of forgotten...

"Tanjiri is not for you. You are not ready to encounter what exists there." So Lezuri spoke in warning, long ago. Urban still possesses the strange gift-the impossible puzzle-Lezuri gave him that day. A needle, ultra-thin and twelve centimeters long, with a silvery surface that slices light into rainbow glints. All Lezuri's knowledge lies locked within that needle. Urban has only to discover the trick of opening it, to gain that knowledge for himself-but...