Three children - Jerry (bossy), Jimmy (hungry) and Kathleen (sensible) - find themselves standing in front of a bejewelled princess in the garden of an enchanted castle. It is the first day of their summer holidays. Is she really a princess? And if she isn't, what about her ring which makes the wearer invisible? This ring, combined with the children's appetite for exploring, sparks a tale full of vivid adventures and extraordinary characters. With `ugly-wugglies' on the loose, statues alive in the moonlight and crimes needing to be solved, there is never a dull moment. Imagination is powerful; magic is possible.