Mr. Glass' unique version of Groundhog Day is an annual city tradition of predicting when winter will start. Every year on the last Wednesday of August, Sherry the Whistlepig emerges from her burrow. If she sees her shadow, it means cold weather is coming. But what makes Sherry's shadow so special? To find out, George and his animal friends camp out at Sherry's burrow, but fall asleep while waiting for her to wake up. At the shadow ceremony, Mr. Glass mistakes a sleeping George and each one of his friends for a whistlepig and presents them for the world to see. But does a monkey, dog, cat, or pigeon shadow count?