Young readers will love the interactive lift-the-flap elements as they join Mr. ZIP for one windy adventure! Mr. ZIP and his trusty sidekick B. Franklin start their day in the mail room. Then it's time to begin the mail route. We accompany Mr. ZIP as he makes his deliveries. Suddenly a huge gust of wind blows the letters away. Mr. ZIP and Franklin have to track them down. Will they be able to find every last letter - and deliver them all before the end of the day?