1985年，那时正是美苏两极争霸越演越烈的年代，史泰龙自导自演的洛基系列也出到了第四集，这一系列影片旨在振奋人心、宣扬美国精神。这一集讲述的是洛基（西尔维斯特•史泰龙 Sylvester Stallone 饰）的好友前美国拳王到苏联出战他们研制的拳击机械人，不敌对手最终身遭不测。为了帮好友复仇和维护国家荣誉，洛基决定再次出马。 　　出战前，洛基进行了一系列精心的准备工作，他深入到大自然，利用自然的艰苦条件刻苦训练。当一切准备妥当，洛基和苏联拳王――拳击机械人的决斗展开了！Ever since his match with Clubber Lang, Rocky Balboa has a peaceful life. And now he and former champion, Apollo Creed, enjoy good times and are now the best of friends. But Rocky's peaceful life as a boxer gets paused after a match Apollo went into. Unfortunately, Creed fought Ivan drago, a 6'5" Russian who has never lost a match, and sadly, brutally murders Apollo in the ring. A funeral is held and times start going downhill fast. Now, in order to restore honor, Rocky challenges Drago to a match and must beat him for sweet, bitter vengeance.