Several things happen on the eve of the long weekend: Jars Kelly and her cousin Snook are accused of stealing some valuable gemstones from the local jeweller; strange lights are seen hovering above their town, Cray Bay; and the bumbling Quenton Quigley stumbles across a riddle that could lead them to a hidden treasure... It all takes place in a dense Tasmanian rain forest where Jars and Snook accidentally meet an old Chinese prospector called Wu Han who has a secret - the secret of the riddle...' (Publication summary)