Twilight Sparkle was merely sent to the caves beneath Canterlot in canon, but what if Chrysalis, who'd recieved a large power boost recently, and who'd realized that putting Cadance and Twilight in more or less the same place might be a bad idea, decided to use a spell she'd learned a long time ago, but never had the power to pull off. Twilight was sent to a parallel world. In this universe, or perhaps I should say multiverse, parallel worlds come in two flavors. 'Line' worlds, which are like parallel lines, never touching, even if they're an atom apart, and 'Mirror' worlds, which are essentially alternate worlds that closely resemble their counterpart, save for a couple differences. Now on a quest to return home, what adventures await Twilight? Note that this is a crossover, and I claim nothing in here for my own. I will mostly use video games and shorter anime as the worlds she'll visit, though OCs might exist.