Transformers: Generation 1 - Dark Awakening - S03 E08 - 1986

Dark Awakening | Transformers: Generation 1 | Season 3 | E08 |

While taking refuge in a mausoleum built as a final resting place for fallen Autobot heroes they lost in the Great War, the Autobots discover that former Autobot leader Optimus Prime has mysteriously returned to life. Upon seeing his old mentor, Rodimus Prime returns the Matrix of Leadership to Optimus, reverting to carefree Hot Rod once again. But things turn ugly when it becomes clear that this is not the same Optimus they once knew. Eventually, the Autobots will find out who brought Optimus back and why.