ThePsiCorpsandPresidentClark,whosegovernmenthasdiscoveredShadowvesselsburiedinEarth’ssolarsystem,begintoharnessthevessels’advancedtechnology TheClarkadministrationcontinuestobecomeincreasinglyxenophobicandtotalitarian,andusesamilitaryincidentasanexcusetodeclaremartiallaw ThistriggersawarofindependenceonMars,whichhadlonghadastrainedpoliticalrelationshipwithEarth Babylon五alsodeclaresindependencefromEarth,alongwithseveralotheroutlyingEarthAlliancecolonies Inresponse,theEarthAllianceattemptstoretakeBabylon五byforce,butwiththeaidoftheMinbari,whohavealliedwiththestationagainstthegrowingShadowthreat,theattackisrepelled BecomingconcernedovertheShadows’growinginfluenceamongsthispeople,CentauriambassadorLondoMollariattemptstosevertieswiththem Mr Morden,theShadows’humanrepresentative,trickshimintorestoringthepartnershipbyengineeringthemurderofMollari’smistresswhileputtingtheblameonarivalCentauriHouse OpenwarfarebreaksoutbetweentheShadowsandtheallianceledbyBabylon五andtheMinbari ItislearnedthatgeneticmanipulationbytheVorlonsisthesourceofhumantelepathy,asitislaterdiscoveredthatShadowshipsarevulnerabletotelepathicattacks DispleasedattheVorlons’lackofdirectactionagainsttheShadows,CaptainJohnSheridanbrowbeatsVorlonambassadorKoshNaranekintolaunchinganattackagainsttheirmutualenemy Kosh’sdeedsleadtohissubsequentassassinationbytheShadows FormerstationcommanderJeffreySinclairreturnstoBabylon五toenlisttheaidofCaptainSheridan,Delenn,IvanovaandMarcusinstealingtheBabylon四spacestationandsendingit一,000yearsbackintimetouseitasaba搜刮引擎优化foperationsagainsttheShadowsinthepreviousMinbari-Shadowwar UndergoingthesametransformationasDelennattheendofSeason一,SinclairtransformsintoaMinbariandissubsequentlyrevealedtobetheactualValenofMinbarilegend,ratherthanareincarnation Spurredbythereappearanceofhisassumed-deadwife whonowworksfortheShadows ,SheridantravelstoZ’ha’dum,theShadowhomeworld,inanattemptbythemtorecruithim Howeverheinsteaddestroystheirlargestcityinakamikazenuclearattack,andislastseenjumpingintoamiles-deeppittoescapetheexplosion Garibaldi,duringafightwithShadowvessels,goesmissing