2007年敬请关注！
简介：IneasternCanada,aMonarchbutterflyemergesfromitscocoonandspreadsitswings.Soon,itwillundertakeabreathtaking2,000-milemigrationacrossNorthAmerica,toasanctuarynestledinthevolcanicmountainsofMexico. Itisajourneyfilledwithperil-butonethattheMonarchexecutesflawlessly.Incredibly,thebutterfliesthatmakethisgreatestofallmigrationswillonlytravelthisrouteonce.…