Art the part-time spy is at it again, and this time he's got birds on the brain. Mr Snippet's Crested Featherfoot Fantail is missing. It's his best bird and unless it's found, his wedding birds-for-hire service might go out of business. Art loves to be faced with a problem and he sets out to catch the thief, with help from his friend India (when she's not collecting dog droppings for her science experiment) and, as usual, no help from Mars Bar!