The iconic monarch butterfly is a true marvel of nature. Weighing less than a penny, it makes one of the longest migrations on Earth across a continent, with pinpoint navigational accuracy, to a secluded place it has never been. Follow the monarchs' perilous and extraordinary journey and join hundreds of millions of real butterflies in the remote mountain peaks of Mexico. For the first time ever, look inside a chrysalis, thanks to advanced MRI and micro CT scans. Be captivated by the true and compelling story of an intrepid scientist's 40-year search to find their secrethideaway, with the help of citizen scientists across North America. Unravel the mysteries and experience the Flight of the Butterflies.