简介：NatureseriesdocumentingthereturnofoneveryspecialwolfpacktothesnowypeaksofWashington'sCascadeMountains-thefirsttoreturntotheAmericanNorthwestin70years.　　Part1.　　Atatimewhenwildlifeisdisappearingacrosstheplanet,oneanimalismakingacomeback-thewolf.WolveswerewipedoutacrossmuchofAmerica,withmorethanamillionwolvesestimatedtohavebeenshot,poisonedortrappedwhenEuropeansettlersarrived.　　Part2.　　AfterspendingfourweekscampingoutinthebitterlycoldCascadeMountains,wildlifecameramanGordonBuchananandateamofwolfexpertsdiscoverthatmostofthepackhavebeenkilledbylocalswholivebythemotto"shoot,shovelandshutup".Buthaveanyofthepackescapedunharmed·Astheteamchaseexcitingnewleads,thereisaglimmerofhopeonthehorizon.…