It is windy and cold on Sesame Street! Big Bird and friends cannot stay warm. Maria suggests exercising to get warm. Her idea works! Big Bird exercises so much he gets hot and needs to cool off. Meanwhile, Oscar decides to prank his friends. Using a microphone and radio, he broadcasts a phony weather bulletin about a snowstorm. The adults realize Oscar is playing a prank! When Oscar is caught in his lie giving them advice on how to prepare for a snowstorm, he vows to make them think a snowstorm is really coming. He uses a block of ice, a fan, and fake snow! The adults huddle and play along with Oscar's prank. After bundling up and getting a snow shovel, Maria decides they should ask Oscar why he created a fake snowstorm. As they approach his trash can, it really begins to snow!