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..他(tā )进来(😚)的一(yī )瞬间，就把目(📭)光落在了张秀娥的脸上，只听他语气平(píng )静(jìng )的问道：你(🔕)有什么(📤)不开心的事情(⛓)？处置(📸)完了这不断叫嚣着(zhe )的淳(🍉)于越之后，秦(🏸)王嬴政又问道：这淳于(😭)越寡人早就想处置了(le )不是吗(👳)？霍(huò )靳南摊了摊手，我走(zǒu )的时(🎧)候(🕣)她就是这个样子啊，听(🌭)说她现(xiàn )在五个(gè )多月了吧？(🐩)怎么(❕)还是这个样(🚒)子？肚子呢？哪去(qù )了(🔸)？慕(🕟)浅轻笑(xiào )了一声(🚟)，缓缓道(dào )：如果是叶子的鬼(📈)魂，她(⛷)不是(shì(🍃) )应该在(👾)国内(🌥)吗(🆔)？还是(shì )她漂洋(🛠)过(guò )海(🗯)(hǎi )来到美国找我(wǒ(🚉) )，连(lián )打电(💙)话都用美国的号(hà(🧜)o )码(🎭)，却不在我面前现(xiàn )身？(😠)我太太是受(shòu )害(🏒)人。霍靳(🧓)西(🚼)缓(👓)缓(👑)开口道，这件事，我不打算接受任何解释(shì )。在托马斯因为肤色而遭受(💞)不(bú )公正待遇的时(shí )候，他选择了(🛀)沉默。杨(💯)戬(🚷)以婴儿之姿(😿)降生(shē(⬆)ng )，成人后(hòu )才会(huì )重获神(🔅)力。张大湖微微一(✂)愣：你来干啥？张(🌫)(zhāng )大(🎲)湖的(🐇)语气不(bú )算多(🔷)好。