Davie Bear has just turned four, and Mummy Bear is taking him to play gym for the first time. Davie is both excited and a little apprehensive of what to expect. Mummy Bear reassures Davie that play gym will not only help him to grow up fit and strong but it will also be a lot of fun. Davie learns that exercise can involve lots of fun activities. The book introduces his friends who look different to Davie and come from different backgrounds, but they all enjoy the same activities and have fun together. Davie discovers that he loves play gym and has a talent!