My Little Pony Transformers Prime: One Shall Stand is a new movie.


A showdown between Optimus and Megatron brings Unicron the Chaos Bringer back to life, so Twilight and Optimus use the Element of Magic and Matrix of Leadership to put him back into slumber but it also results in them losing their memories and becoming their pre-Prime and Princess selves, Nightfall Twinkle and Orion Pax. Megatron makes them believe they are Decepticons but the two soon regain their memories and become Optimus and Twilight again thanks to Rainbow Dash.


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