Elmo and Rudy are having a sleepover and building a pillow fort but they don't have a pillow big enough for the roof. This is a problem! They wonder what they can use to build a strong and sturdy roof. What if they use a blanket and weigh it down with heavy books so it doesn't fall down? Let's try! It works. Elmo and Rudy didn't give up and built a pillow fort. Let the sleepover begin!