Autumn is craft time. And Petronella's garden is also a hive of activity. Together with the twins, Lucius the stag beetle and the little apple men, they do whatever they can. But the next day, the apple men suddenly disappear. What could have happened to them? Thanks to Luis and his detective set, Petronella and her friends soon realise that the apple men have been kidnapped. And fortunately, holiday dog Bello helps them on the right track with his sniffer nose. Deep into the forest behind Petronella's garden ...