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..在本系列中，我们(👡)深入菲律宾、(🖕)印度(dù )尼(👖)西亚、日本(🧀)和(🧀)韩(😽)国等(😐)地的(🐝)海底(📁)，......。……悬崖下的山涧边上，暗黑天狼半边身子泡在水里，一动(🌎)也不能动(dòng )。造化(❓)弄人(🌤)，若微(😹)(wēi )与(🎳)妹妹蔓茵同时嫁入宫中，目(🍔)睹了国家正在(zài )从乱象中(zhōng )恢复，平关外(🤢)(wài )，迁首(🖇)都，通运河，郑和下西洋，扬(🙁)威海(🛸)外，编撰《永乐大典》，盛世将成。一时之间王(🈂)小虎还有些发愁。对(🕘)(duì )顾(gù )倾尔而言，跟傅城予(🚸)说完解脱，还远远(yuǎn )不也是解脱。众人呆呆地站在原地，目光紧(jǐn )紧追随着她离去的方向(🚥)，心中涌(yǒ(🐽)ng )起一(🐬)(yī )股(gǔ )难以言喻的失落(👆)感。我知(zhī )道叶惜(🗯)的生(shē(🚗)ng )日(rì(🧛) )是十二月(💫)五日，你选在这样的时间，大规模地向(🌑)(xiàng )全(quán )世界推(👈)送这(⛱)样(🚊)一首(shǒu )歌，你是想表达什么？陆棠红(🤲)着眼(🍐)(yǎn )睛(💥)问他(tā )。申望津(🧜)(jīn )转身在他房间的沙(shā )发里坐下(xià )来，不紧(🙁)不(bú )慢道：(🤐)他现(👏)在在(🍧)警方的控制中，哪里是说(💴)见就能见的。