From a tiny egg to a beautiful butterfly, the complete metamorphosis of a butterfly is an incredible journey. The narrative of this story is written in the voice of a female Black Swallowtail named Skye. In a supporting role is Laya who lays many eggs but is doubtful that "the worms" as she calls them will ever be beautiful butterflies. A satisfying change of heart comes to Laya with Skye's help. Fact boxes on most pages supply scientific information that explains the butterfly life cycle.