The last thing Twilight remembers is following the path through the Everfree home from Zecora's...

The last thing Twilight remembers clearly is following the path through the Everfree home from Zecora's. Bits and pieces, like half-forgotten dreams appear and disappear as she tries to figure out what happened. A strange, cat-like monster with glowing eyes, being trapped in a glass cylinder, observed by strange cyclopean bipeds and a creature with four arms...

Very suddenly, she found herself in a round, metallic object of some sort, falling from the sky. After a rather rough impact, she looked out.

On a desert with no sun, three moons and a nebula.