- Professor Sumdac's latest creations begin to think for themselves. Eventually, these Dinobots start to hunt down the Autobots.
- Sari takes the Autobots to a place called Dino Drive to teach them about Earth's history. Bulkhead's clumsiness results in three of the robot dinosaurs getting broken. As Sumdac prepares to fix them, Megatron gives him some ideas for "improvement," secretly including weapons with the intention of creating battle drones he can control. Meanwhile, Prowl has taken Bulkhead to an island in Lake Erie to try to teach him stealth. When the new dinobots go on a rampage at Dino Drive, the Autobots shut them down with Ratchet's magnetism, Bumblebee's electricity, and a boost from Sari's key, which gives them the spark of life. They awaken, alone in Sumdac's lab with Megatron, and he discovers he can not control them as he'd hoped. However, Tutor Bot starts talking about dinosaurs, including the use of fossil fuel for gasoline, and this upsets the Tyrannosaurus Rex (who took the name Grimlock from Megatron's soliloquy), who decides cars and trucks are bad because they eat dinosaurs. Megatron is able to convince them that "car robots" are even worse. The dinobots escape from the lab and start attacking vehicles, and the Autobots draw them away. In the end, the dinobots become trapped in road tar they melted with their fire breath, and Sumdac builds an energy cage around them and the tar, intending to dismantle them in the morning. Prowl and Bulkhead sneak back during the night and move the dinobots to the island, because Prowl knows they are alive.
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