Cainisamilitaryscientist,bitterlydisappointedinhumanrace.Hisconclusionisthatthemankindfailedtocreateaworldworthlivingin.Onlyasmallminorityofprivilegedpeopleliveinprosperity,whiletherestarespendingtheirlivesinpainandhopelessstruggletosurvive.Oneday,CainmadeadecisiontowipeouttheentirehumanracefromplanetEarth,byactivatingtheweaponsofmassdestruction.Timehaspassed,andCainiscomingoutofthesheltertofindtheplacewherehewilldie.Theplacewherethelastmanwilldie.Suddenly,he'sstartingtoreceiveamysterioussignalthatindicatessomeoneelse'spresence.So,hegoesinsearchtoeliminatethesurvivorandcompletewhathehasstarted...