In this Nancy Drew and the Clew Crew adventure, Nancy and her friends must track down a beautifuland very rarebutterfly when it goes missing from the new butterfly museum.Nancy, Bess, and George cant wait to check out Flutter House, an awesome new museum thats all about butterflies! The girls are thrilled when they get to see the beautiful creatures up close and personal. But soon after their class leaves, the rarest butterfly, a Blue Morpho, goes missing! Its up to the Clue Crew to get the valuable butterfly back safely. But with a long suspect list and not many clues, its going to be a tough case for Nancy and her friends.