Thedocumentarydepictsmonarchbutterfliesgreatandmysteriousmigration.Eachyearsautumn,millionsofmonarchbutterfliesstarttheirincrediblesouthwardmigrationfromCanada,crossAmerica,toMexico.Theyflyabove2,000milestoarrivethemountainofMexico.....ThefilmopenswithcaterpillarsmunchingmilkweedinsouthernCanadainlatesummer.Sooneachcaterpillartransformsitselfintoasilkychrysalis.Roughly10dayslater,adelicatefour-wingedmonarchemerges.Then,atsomeunknownsignal,themonarchstaketotheaironatwo-month,2,000-mileflightoverfields,forests,cities,plains,openwater,deserts,andfinallymountainstocongregateinatiny,high-altituderegionofcentralMexicowheretheyveneverbeenbefore.Incredibly,theyarrivebythemillionsatthesametimeeachyear.Sheddinglightonthisnaturalwonderaresomeoftheworldsleadingmonarchresearchers,includingLincolnBrowerofSweetBriarCollege,independentbiologistBillCalvert,andOrleyChipTayloroftheUniversityofKansas.Puttingthemonarchphenomenonintoperspective,Taylorsays,YouvegotabutterflythatsoriginatinginToronto,oritsoriginatinginDetroit,Michigan,oritscomingdownfromSt.PaulormaybeevenWinnipeg,anditsmovingsouth.SomehowitfindsitswaytoMexico.Couldyoudothat?Nooneyetknowshowthebutterfliesdoit,butTaylorsresearchrevealsthattheyareexpertnavigators.Inoneexperiment,hetransportedMexico-boundmonarchsfromKansastoWashington,DC,andthensetthemloose.Atfirst,theyflewsouthasiftheywerestillinKansas—(🧔)acoursethatfromWashingtonwouldmissMexicoentirely.Butafterafewdays,theycorrectedtheirflightpath,asifsomeinbornGPSunithadalertedthemtothetruedirectionoftheirdestination.Inanothersequence,NOVAaccompaniescelebratedmonarchwatcherBillCalvertaroundbackcountryTexasashelooksforsignsofthemonarchmigration.Sureenough,theyshowupenmasseandontime,headingtowardtheSierraMadremountainsacrosstheborder—thelastlegoftheirflight.AndintheMexicanstateofMichoacá(🙋)n,NOVAjoinsmountainvillagersastheycelebratethearrivalofthemonarchsinthefirstweekofNovember.ThebutterfliesarrivalmarksthestartofacelebrationcalledtheDayoftheDead,sincethelocalpeoplehavetraditionallyassociatedthemonarchswiththereturningsoulsoftheirdepartedancestors.Unfortunately,illegalloggingintheMexicanbutterflysanctuariesthreatenstheuniquehabitatthatmonarchsdependonfortheirsurvival.Monarchsmaynotyetbeanendangeredspecies,buttheirannualmigrationisanendangeredphenomenonthatcoulddwindletoinsignificanceifthegiantfirsthattheyclingtoduringthewinterdisappear.Gonealsowouldbethecolorfulfestivalthatclosestheprogram—(🔆)afireworksdisplaywelcomingthehardyflierstoMexico,withorangeburstsagainsttheblacksky,lookingalmostlikethebeautifulcloaksofthemonarchs..祁(🍼)然！慕浅看见霍祁然(rán )走出去，连(🐶)忙就要(🍔)拉住他(🦅)，谁知道一转到房门口，却(què(🍸) )是霍靳西走(zǒ(🐿)u )进来，轻(🌚)轻带(dài )上了房(♉)门。在我们聊天的功夫(📄)，那个人发现了我们，径直(👵)(zhí )向我们(men )走来，站到(😩)我(👞)们面(🙉)前，我看他一脸没什么好(📀)表情，我问他:请问这位老(lǎo )先生有(yǒ(🚿)u )什么(🚴)事。沈南砸了(🌳)砸嘴(zuǐ )，开什么(me )玩(🌲)笑(🌂)，这种做梦都害怕，谁闲的蛋(dà(🥩)n )疼四处宣扬?顾新柔走后，沈南洗(xǐ )漱(shù )一番(fān )。托盘上是熬好的(de )粥(zhōu )和饭菜，随(suí )便吃(chī )些，我(wǒ(💣) )烧了热水，今(🆗)日有些热。然而为了与妻子回家(💩)乡(🦏)过安稳日子，他不惜递交辞呈，背(🐧)上叛徒的罪名。此时的在(🔥)(zài )船上(🐗)(shàng )的香(♿)克斯头(tó(😪)u )都(dōu )快(🥞)炸(🚼)了，在香波地(🛫)群岛，落凡带着那个小姑(🔨)娘一打二，单挑(🔚)两个大将也就(⛎)罢(🎃)(bà )了(le )。但(🏮)是，仿(fǎng )佛(🖼)(fó )她有幸运之神的庇护一样，凡是给她(📝)(tā )制(😭)造麻(🗣)烦的人，都(dōu )会发生意(🎞)外(🔢)三火等(💶)人(rén )收(shōu )到消息(xī )之后在朝(cháo )廷公主的号召之下一行人(🏍)在向导墨的带领之下(🥟)踏上(🌜)去往烈风(🍚)谷的道路，打算一探究竟。