Attheendofthe1930s,Hitlerorderedtheconstructionofaspecialtrainthatcouldtransporthimaroundsafelyandappeasehisgrowingparanoia.Averitablefortressonrails,thisarmoredfifteen-carriageconvoyservedashismobileheadquarters,andwaswherehemetprivatelywithPétain,FrancoandMussolini.ItwasalsothetargetofnumerousassassinationplotsbytheBritishsecretservice.Equippedwiththemostadvancedcommunicationfacilitiesandabatteryofanti-aircraftcannons,itsconstructioncalledforateamofthebiggestnamesinengineering,whiletheluxuriousinteriorofeachcoachwasdesignedbytheFührerhimself.WetraveltoGermanytodiscoverwhat'sleftoftheseexceptionaltrains,anddigthroughthefewsurvivingarchivestoretracethelittle-knownhistoryofthisspecialtrainandpiercethesecretsbehindHitler'sbeastofsteel.