ThePsiCorpsandPresidentClark,whosegovernmenthasdiscoveredShadowvesselsburiedinEarth’ssolarsystem,begintoharnessthevessels’advancedtechnology.TheClarkadministrationcontinuestobecomeincreasinglyxenophobicandtotalitarian,andusesamilitaryincidentasanexcusetodeclaremartiallaw.ThistriggersawarofindependenceonMars,whichhadlonghadastrainedpoliticalrelationshipwithEarth.Babylon5alsodeclaresindependencefromEarth,alongwithseveralotheroutlyingEarthAlliancecolonies.Inresponse,theEarthAllianceattemptstoretakeBabylon5byforce,butwiththeaidoftheMinbari,whohavealliedwiththestationagainstthegrowingShadowthreat,theattackisrepelled.BecomingconcernedovertheShadows’growinginfluenceamongsthispeople,CentauriambassadorLondoMollariattemptstosevertieswiththem.Mr.Morden,theShadows’humanrepresentative,trickshimintorestoringthepartnershipbyengineeringthemurderofMollari’smistresswhileputtingtheblameonarivalCentauriHouse.OpenwarfarebreaksoutbetweentheShadowsandtheallianceledbyBabylon5andtheMinbari.ItislearnedthatgeneticmanipulationbytheVorlonsisthesourceofhumantelepathy,asitislaterdiscoveredthatShadowshipsarevulnerabletotelepathicattacks.DispleasedattheVorlons’lackofdirectactionagainsttheShadows,CaptainJohnSheridanbrowbeatsVorlonambassadorKoshNaranekintolaunchinganattackagainsttheirmutualenemy.Kosh’sdeedsleadtohissubsequentassassinationbytheShadows.FormerstationcommanderJeffreySinclairreturnstoBabylon5toenlisttheaidofCaptainSheridan,Delenn,IvanovaandMarcusinstealingtheBabylon4spacestationandsendingit1,000yearsbackintimetouseitasabaseofoperationsagainsttheShadowsinthepreviousMinbari-Shadowwar.UndergoingthesametransformationasDelennattheendofSeason1,SinclairtransformsintoaMinbariandissubsequentlyrevealedtobetheactualValenofMinbarilegend,ratherthanareincarnation.Spurredbythereappearanceofhisassumed-deadwife(whonowworksfortheShadows),SheridantravelstoZ’ha’dum,theShadowhomeworld,inanattemptbythemtorecruithim.Howeverheinsteaddestroystheirlargestcityinakamikazenuclearattack,andislastseenjumpingintoamiles-deeppittoescapetheexplosion.Garibaldi,duringafightwithShadowvessels,goesmissing.

巴比伦5号第三季是由J.,Michael,Straczynski执导，Bruce,Boxleitner,Michael,O'Hare,Claudia,Christian,Jerry,Doyle,Mira,Furlan,Richard,Biggs,Andrea,Thompson,Bill,Mumy,Jason,Carter,Tracy,Scoggins,Stephen,Furst,Patricia,Tallman,Peter,Jurasik主演的欧美剧，在1995年上映播出，飘花电影网提供了巴比伦5号第三季在线观看，并且还可以支持手机看，不需要下载播放器,方便广大影迷。