A troupe of acrobats is coming to Wimbledon Common and the Wombles are very excited, especially Great Uncle Bulgaria. He is planning their very own performance- Alderney will learn the high wire, Orinoco can be a clown and Wellington is going to invent a new magic trick! But Tomsk would rather practise his climbing skills than rehearse for the show. If only climbing wasn't such a dangerous sport ... Luckily, Great Uncle Bulgaria always knows how best...