On the eve of the new millennium, Zoe and Davy buy a handful of precious stones from an ancient pedlar. She tells them, if they seek knowledge and understanding, to cast one into the Thames at midnight. Sceptical but daring, they follow her instructions. What follows is a bewildering series of adventures in time. Lost, friendless and in constant peril, they witness five extraordinary nights. Contains adult themes. For ages 12 and over.