Baby Bear and Telly are reporters at the Sesame Street Fairy Tale Science Fair where everyone's favorite fairy tale characters are solving problems with science! Little Red Riding Hood is the first fairytale scientist and she is having trouble telling the difference between her granny and the Big Bad Wolf, who is dressed up just like her granny. She decides to solve her problem by observing and comparing. After she looks closely and carefully, she points out their similarities and differences and discovers who the real granny is! Cinderella, who just loves science, asks a question about whether a pumpkin will float or sink. Cinderella, Baby Bear, and Telly form a hypothesis and conduct an experiment to test it. Baby Bear and Telly think that it will sink, but the pumpkin actually floats! The Prince comes over with Cinderella's glass slipper and both Telly and Baby Bear think that it will float. But science surprises them again, and the slipper sinks! Next, the Three Little Pigs become worried about the Big Bad Wolf blowing down their house. They discuss what they already know: the wolf is coming and he can huff and puff and blow them away. They decide to build a house to protect them, but can't agree about which material is the best to use. Baby Bear helps them design an experiment to figure out which material is the sturdiest. They each make a hypothesis and use a fan to see which material won't blow away - straw, sticks, or brick. The pigs conclude that brick is the sturdiest material. The Big Bad Wolf arrives, but to his disappointment, he can't blow down the brick house. Science saved the day and solved lots of problems on Sesame Street!