Starswirl the Bearded's Mirror Laws state that alternate worlds exist. Unfortunately, there's no way to find out if these alternate worlds have magic of their own, and without magic working on both sides, there's no way anypony can travel to them.

But is Starswirl the Bearded wrong?

When four strange ponies appear in Fluttershy's backyard, Twilight Sparkle must delve into a mystery she'd never before thought possible. Danger lurks not only in the shadows but also in the light...so to what lengths is Twilight willing to go to protect her newfound friends?

Crossover with Grojband. Which we don't own. Neither do we own MLP. However, the cover art is ours! Please don't take it!