Transformers: Generation 1

S03:E08 - Dark Awakening

Optimus Prime returns from the grave to lead his fellow Autobots once more, but he seems to be a different robot than he used to be. Things turn ugly when it becomes clear that he has been secretly reprogrammed by the Quintessons to lead the Autobots into a deadly trap. Now, Hot Rod must save his fellow Autobots from the Quintessons' trap before it's too late.