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.AndintheMexicanstateofMichoacán,NOVAjoinsmountainvillagersastheycelebratethearrivalofthemonarchsinthefirstweekofNovember.ThebutterfliesarrivalmarksthestartofacelebrationcalledtheDayoftheDead,sincethelocalpeoplehavetraditionallyassociatedthemonarchswiththereturningsoulsoftheirdepartedancestors.Unfortunately,illegalloggingintheMexicanbutterflysanctuariesthreatenstheuniquehabitatthatmonarchsdependonfortheirsurvival.Monarchsmaynotyetbeanendangeredspecies,buttheirannualmigrationisanendangeredphenomenonthatcoulddwindletoinsignificanceifthegiantfirsthattheyclingtoduringthewinterdisappear.Gonealsowouldbethecolorfulfestivalthatclosestheprogram—afireworksdisplaywelcomingthehardyflierstoMexico,withorangeburstsagainsttheblacksky,lookingalmostlikethebeautifulcloaksofthemonarchs..冯书文，你脑袋没(🌊)(méi )有坏掉(🐇)吧(📁)？张(🐎)秀娥疑惑的问了一句。众人打量着面前的基地，只见前(qián )面到处都是货架，货架上满满(mǎ(🥐)n )当当摆放着各种军(🔌)用罐头(🦒)，雨(🅰)衣，棉袄(ǎo )，医疗用品(pǐn )，各种油类更(📰)是摆了(🍓)一(🌐)面墙(🤜)，比抹黑看，更加壮观。诅咒接二连三应验，甚至连上田也(🏕)无法(🍺)幸(😲)免。未曾料(liào )到此刻已是什(shí )么(🤣)都没有(yǒu )了，只得灰溜(📐)溜(💛)地走了。慕浅缓(😽)缓抬眸看(👔)向(🌫)陆(lù )与川，陆(👐)与川(chuān )同(tóng )样看(kàn )了她一眼，随后(🚈)大步走(zǒu )出了电梯(tī )。然(🅱)而随(🌂)着时间的流逝(⛎)，玛奇亚必(📱)须(xū )要学会(⏹)(huì )如何做一(🏩)个母(mǔ )亲，经历人间的生离(🌕)死(sǐ )别，并(bìng )在朝代的(😌)更迭(📍)中守护离别一族最后(hòu )的(de )信仰…并非(💋)红(🍚)星轧钢厂的领(lǐng )导。因为绑着沙(shā )袋训练，她们训练到最后(📙)，各(gè )项训(⚫)练也只(🔴)是和2班的女生打成(chéng )平手，甚(⏹)至隐隐(🕜)(yǐn )落点下风(🕥)。