In this novel for 11-15 year olds we meet Christy Barnfield, who hates the Elford Folk Festival. Every year it brings disruption to his otherwise quiet country town. Skye Luxford loves the festival. Every year she travels from her home town of Sunshine, in the northern coastal region of Rainbow Bay, with her parents to enjoy the Australia Day event. The two youths meet when they both see - or believe they see - a dinosaur in the River Lynn. They believe a predator seeks its death. But their beliefs are confounded when a mysterious explosion on the banks of the River Lynn leads visitors to the Folk Festival to suspect that a dangerous new weapon is being tested in the region. Christy and Skye join forces with Christy's best friend Julio to thwart pending disaster at the Elford Folk Festival.