Big Bird and his friends at summer camp are on a picnic, when it starts raining. As they head over to the lodge, they sing "What Do You Do on a Rainy Day". You can watch it rain, stay in bed, play dressup and pretend you're somebody else, read a book, take out some pots and pans and pretend to cook, or march around with a drum. Oscar the Grouch, however, would rather be outside splashing around in the puddles.