Paramnesia [Transformers: Prime]

The Mandela effect is one that has baffled humans for decades. Some believe that it occurs due to a one in a billion effect: parallel universes brushing against each other, just briefly - in the cosmic sense - and distorting the realities of both.

The Autobots accidentally discover this when Ratchet sends them a Groundbridge that ends up right in the crosshairs of their universe, and that of another.

It was a one in a trillion shot, and the Autobot medic had done it blind. Now Optimus Prime, Arcee, Bumblebee, and Bulkhead find themselves in a world that is not theirs, with enemies they had no idea existed. Struggling to figure out what just happened, and how to get back, they must all cope with the changes that have occured - and pray that no one antagonistic was taken to their world in exchange.