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..然而去到(dào )那群人吃饭的(🎁)会所，慕浅才觉(🖕)出(🌄)自己(🍡)天真(✔)(zhē(🚇)n )。艾玛·罗伯茨与迈克尔·(🐾)安格拉(lā )诺([功夫(🤲)之王])将(🍪)合作新片[恋爱关(guān )系](InARelationship，暂译(yì ))可是姜启(🙂)晟觉得(dé )，他(tā )可(kě )以试着去懂这(📶)些，他一步步走到了苏明(🍄)珠(🐏)的(❎)面前，抱拳行礼(👚)道：在下姜启晟。第(🏅)(dì )二天，军校里，迎来(lá(📃)i )了(💳)另(📙)外一个教导(🎭)员(yuán )，据(🏸)说是心理辅导员(📼)。孟行悠按下锁屏(píng )把手(👕)机扔进(🖇)兜(🦐)里揣着，咬牙低声(shēng )骂(mà )了句(📩)：渣(💸)男张秀(🏻)娥听(💔)到这忍(♌)不住的哆嗦了一下，杨翠花会(huì(🛍) )说这样的话？这根本(běn )就不是杨翠花的风(fēng )格(🚻)啊！要知道，杨翠花(🆙)最(📦)擅长可是骂(mà )人和嚷(🌉)(rǎng )嚷人(🚀)，哪里会说(🧐)这样肉麻(🖌)的话。她只能用一句话来(lái )形容：不(🚦)愧(🌇)是国(guó )宝(💩)级(jí(🎙) )的科学家(🍛)陈元。内地少女虹（(🕶)郭可盈(yíng )）来港数天，欲当娼妓赚取金(🌋)(jīn )钱