During Wheatley's time in charge of Aperture Laboritories, he manages to dispose of a Turret who was bothering him. What he didn't know is that he sent the turret into another dimension.
The life of a self-sustaining, Shock Jockey-powered horse isn't a very lively one...he stands, and he walks, that was about it- until an angel presents him with the opportunity to escape his torment.
Sometimes, even after a second chance has been thrown away- whether to selfish greed, or to keep old promises- it isn't the end. Sometimes a third chance will present itself, a whole new opportunity to start anew. (Portal 2 Crossover)
Sequel to My Little Portal- Friendship is Science. Before Fluttershy dies, she hears some disturbing news. Celestial Science is being built in her world. It's a shame the mane six won't be there to stop it.