Emmy loves ballet but she isn't old enough to dance in her sister Charlotte's class. Then one day when she comes to watch the lesson she can't resist joining in. Before anyone realises, Emmy's doing pli-s at the barre - and she's doing them very well! Most of the class are thrilled by her dancing, but Charlotte isn't quite so comfortable about having a little sister who seems set to steal her limelight. When Emmy is given the coveted role of Spring in the annual show it seems the final straw for Charlotte, but then her teacher helps her to understand that although Emmy is very talented for her age, she can't dance as well as Charlotte, and Charlotte ought to feel proud that Emmy has learnt so much from watching her talented big sister.