We solemnly swear to seek adventure, excitement and danger and to rescue anyone in peril." So proclaim the Freewheelers, Gina, Claire and Mandy, as they set out on a new adventure - to stop the Greatest Robbery Ever in the seaside town of Coombe Bay where they live. When the Freewheelers learn about a plot to steal the carnival charity collection they know they have to foil it. If all goes according to plan they will stop the robbery and fix their deadly enemies the Plunketts at the same time. But who will get the blame if their plans go wrong - as usual?