En route to a party they are not keen on attending, the Famous Five are almost relieved when Aunt Fanny's car breaks down, stranding them in a small town. To pass the time, they visit the local natural history museum, where some newly-discovered dinosaur bones are being unveiled. Here they meet Marty, who tells them that his father, long dead, supposedly found a complete dinosaur skeleton and made a map of its whereabouts. Unfortunately the map has been stolen. Unable to let a good mystery go unsolved, George, Julian, Dick, Anne and Timmy, join a guided hike through the Valley of Dinosaurs. But their fact-finding mission soon turns into a race to find the dinosaur when they suspect that the thief is one of the group.
as George
as Julian
as Dick
as Anne
as Marty Bach
as Carl Herzog
as Barbara Herzog
as Harald 'Becky' Beck / Hans
as Gottfried Meyer
as Christa Kleinhans
as Pedro Mendes
as Kurt Weller
as Tante Fanny
as Melanie
as Walter Kleinhans
as Blumenverkäuferin
as Inspector Stiel
as BM Jacoby
