Logan finds himself teleported into Equestria without any memory of how it happened. To his displeasure, he meets the local populous–all the while wondering if he'll ever get back home.
Our favorite boy genius builds a time machine in order to visit the past and disprove the existence of Nightmare Moon. Predictably, he bit off more than he could chew.
Twilight Sparkle botches a spell and ends up in a whole new realm of danger and adventure, where the land is ruled by a much more pragmatic pony empire, ruled by a very mortal queen. A Ponyfinder crossover.