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Episode Title: Unforgotten.
Episode Description: Optimus Prime and Windblade find Megatron battling several of the Constructicons on an unknown planet, where he taunts the both of them and initially wants nothing to do with them. After learning that Starscream is in possession of the Enigma, however, he agrees to join their mission, and the three set off together. Unbeknownst to Windblade, however, the Constructicons have overheard their conversation.