该剧改编自徐贵祥原著小说《马上天下》。1928年大革命时期陈秋石为逃避父亲安排的婚姻，在进步青年赵子明的帮助下走上革命道路，被派往黄埔分校学习军事。瘦弱的他却颇具战略天赋，在恩师栽培下成长为将才。因信仰不同最终与恩师分道扬镳。抗日战争爆发，他带领部队以少胜多，屡立奇功。但擅自改变战术，违抗上级命令，使他数次遭贬，几起几落。十七年未回家，从未谋面的儿子陈三川成为其队伍中一名英勇战士，因恨父亲当年对母亲的绝情而拒绝相认。陈秋石满怀愧疚，默默悉心培养、调教着儿子。陈三川对父亲的态度渐渐有了改观。解放战争爆发，陈秋石因掩护战士被炮弹击中。病床前，父子二人终于相认。其后两人联手在战场上谱写出一部感人的战场传奇。
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