It is a wet and miserable day and Emmy is stuck inside - the whole world seems terribly grey and there's nothing to do. But then Emmy's dad suggests they go outside to chase a rainbow! Rainbows can be shy and elusive, but by following some brightly hued clues, Emmy discovers you can find colour in the unlikeliest places! From an orange leaf in the park, brightly coloured cyclists zooming past to the busy highstreet and all the vibrant cars, shop windows and people, the rainbow seems to be hiding around every corner! Will Emmy and her dad ever find the rainbow?