塞伯坦被汽车人和霸天虎的内战搞得满目疮痍。汽车人决定乘坐方舟号离开塞伯坦寻找新能源，霸天虎闻风后，威震天派震荡波留在塞伯坦，其余霸天虎乘坐报应号追击。在追击过程中霸天虎登上方舟号，但飞船不幸发生事故，坠入地球，两个派别的人都昏迷不醒。四百万年后，一次火山爆发使飞船重新运作，首先复活了霸天虎一行。红蜘蛛为了消灭昏迷的汽车人偶然再次触发了修复系统，汽车人全体复活。擎天柱派探长和飞过山监视霸天虎的行动，因为飞过山的开火使得二人被追杀，探长受伤。威震天为了获取能量块前往油井，闻讯的汽车人及时赶到。霸天虎获得能量块立刻撤离，汽车人与油井工人落入海中。

汽车人解救了油井的工人，并让人类斯派克父子加入了汽车人的阵营。斯派克偶然将变成收音机的声波带入汽车人基地，获得了有关地球能量储存的资料。声波逃跑过程中机器狗被汽车人所俘。观看了声波带来的资料，威震天决定到水力发电厂获取能量。霸天虎战胜汽车人带着能量块离开了水力发电厂。威震天又来到了缅甸的红宝石矿，而汽车人派大黄蜂和斯派克普拉深入矿井安置炸弹。眼看爆炸时间快到，擎天柱和他随身携带的小滚轮前去营救，炸弹正好爆炸。

爆炸并没有伤害到小滚轮和大黄蜂与斯派克普拉，但霸天虎同样逃过一劫。探长提出可以利用全息影像哄骗霸天虎并将其一网打尽，并演了一出不小心放走机器狗的戏。机器狗回到霸天虎基地，威震天识破了汽车人的诡计，做了一堆废料交给汽车人处理，而同时其他霸天虎来到火箭基地获取了足够让霸天虎飞回塞伯坦的能量。汽车人包围了威震天飞船所在地，但没能阻止霸天虎登上飞船。擎天柱飞上天阻止飞船但被飞船击中。幻影隐身进入霸天虎飞船使飞船失控，霸天虎回到塞伯坦的计划失败。霸天虎的飞船落入海中，汽车人以为他们已经被消灭。

The Secret Files of Teletraan II were a series of short (1–2 minute) profiles which aired in 1986, after select episodes of the third season of the original Sunbow cartoon series. They included recaps of past events, character and group profiles, and "where are they now" guides, helping to explain the 20-year time gap between seasons 2 and 3 to viewers who had not seen The Transformers: The Movie.

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Featurette about the hardcore keepers of the franchise, the fans, get a chance to show off their love for all things Transformers.

Beginning with a recap of the coming of the Transformers to Earth and the story of Devastator, the OVA then gets its original story underway, as the Autobots are shown to be in the midst of constructing the powerful "Scramble City," overseen by their newest arrival, Ultra Magnus. When the Decepticons learn of this, their combiner robots are deployed to attack, and a battle between them and their Autobot counterparts ensues, focusing on their "Scramble Power" - the interchangeability of the individual limbs - to the extent that at one point, Breakdown of the Stunticons connects to Superion to damage him. At the OVA's conclusion, Scramble City is activated and assumes its robot mode of Metroplex to rout the Decepticons. However, from the ocean depths, the Decepticons' own city, Trypticon, rises.