Annie Rosenthal, a passionate reporter and daughter of entomologist Martha Weiss, explores the fascinating correspondence between her mother and a young Japanese scientist named Joe. They discuss the remarkable journey of caterpillars and their transformation into butterflies, inviting listeners into a shared love for science. A captivating story unfolds about the bonds formed through letters, curiosity, and the cultural significance of insects in Japan. This exploration emphasizes how passion for science can bridge generations and spark unexpected adventures.