国民党陕军某部少校、中共地下党员冯智，在中共地下党组织和游击队的配合下，剿灭土匪，打击敌特，克服重重困难，在大巴山地区建立了秘密交通线，并通过交通线给陕南川北苏区和红四方面军运送了大量物资的故事。
遇播放卡顿或无法播放时，可切换线路播放
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