TJ is mad about climbing - she'll climb absolutely anything - even though she knows she shouldn't, and Mum is forever telling her to be careful. So when TJ's friend, Laura, comes round, TJ can't wait to show off. As soon as Mum's back is turned, TJ starts to climb the tree in the back garden. Higher and higher she climbs and Laura is getting more and more anxious. But TJ is sure she'll make it to the top! But then something awful happens: TJ loses her balance falls - straight on top of poor old Laura. Now Laura's got a broken arm - she'll need to wear a plaster for ages . . . And TJ is in BIG trouble. TJ feels terrible, perhaps she'd better give climbing a rest . . . At least for a while . . .