Transformers: Generation 1 - Return of Optimus Prime, Part 1 - S03 E29 - 1986

Return of Optimus Prime, Part 1 | Transformers: Generation 1 | Season 3 | E29 |

An embittered scientist and his partner decide that it's time to rid themselves of every Transformer on Earth. Their plan is use the lifeless body of Optimus Prime to lure the Autobots to his laboratory, where they release a dangerous plague from space that pits Autobot against Autobot. But soon, this Hate Plague spreads to the Decepticons, the human race, and the entire universe as well. When Rodimus Prime falls victim to the plague as well, the galaxy's only hope is to restore Optimus Prime to life, hoping that he can save the Autobots and the galaxy.