When the banished Combaticons conquer Cybertron, and use the planet's energy to push the Earth into the Sun, Optimus and Megatron must work together in order to stop them.

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Starscream creates his own group of Combiners, which he names the Combaticons. Together, they attempt to overthrow Megatron.

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Megatron contracts a metallic plague which Preceptor helps cure through the use of his newest invention: Corrostop

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The Autobots must battle the Stunticons and protect a revolutionary race car or Megatron will be able to control Earth's weather.

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The Aerialbots are sent nine million years into Cybertron's past and have to make sure Optimus Prime falls in love at the Enchantment Under The Sea dance.

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The Aerialbots stumble on a Decepticon scheme to harvest energy from the Middle East, and meet the Combaticons a number of episodes before we first meet the Combaticons.

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Combiners. Combiners! COMBINERS! This episode has Combiner Transformers, which combine into giant Combiner robots! Combiners!

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Megatron builds five new powerful Decepticons and travels to Cybertron, where they gain cool powers. Then Optimus does the same thing because he's his own man.

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A bunch of Autobots get used by the Hollywood system while Megatron tries to steal another one of Wheeljack's McGuffins.

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Powerglide forges a new friendship with Astoria, the CEO of Hybrid Technologies, when he has to save her from Megatron's latest evil plan.

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