The Magic School Bus takes Ms. Frizzle and her class on a trip to the Museum of Natural History. During the trip the class travels back to the Mesozoic Era and experiences a first hand Jurassic adventure!

When Ms. Frizzle ordered skeleton costumes for us, some of the bones were missing. We headed for the Hugh Mann Costume Compnay to look for them and learned why we need our skeletons, what different bones are far, and what makes them grow. But, why was that strange skeleton following us?