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简介：TheTARDIScrewlandsintheHimalayasofCathayin1289,theirshipbadlydamaged,andarepickedupbyMarcoPolo'scaravanonitswayalongthefabledSilkRoadtoseetheEmperorKublaiKhan.ThestoryconcernstheDoctorandhiscompanions'attemptstothwartthemachinationsofTegana,whoattemptstosabotagethecaravanalongitstravelsthroughthePamirPlateauandacrossthetreacherousGobiDesert,andultimatelytoassassinateKublaiKhaninPeking,attheheightofhisimperialpower.TheDoctorandhiscompanionsalsoattempttoregaintheTARDIS,whichMarcoPolohastakentogivetoKublaiKhaninefforttoregaintheEmperor'sgoodgraces.TheyarefinallyabletothwartTegana,and,indoingso,regaintheEmperor'srespectforMarcoPolo,whoallowsthemtodepart. 维基百科：http://en.wikipedia.org/wiki/Marco_Polo_(Doctor_Who)…