Planeswalkers are mystical beings that can travel between universes. They have the power of near-infinite magic at their fingertips.
When Garruk, a human planeswalker, chases his prey Liliana into the land of Equestria, he starts a chain of events that will lead ultimately to a war with Equestria.
Twilight Sparkle, one of the four alicorn planeswalkers, must find a way to settle the conflict before her world is destroyed.

(A crossover with Magic: The Gathering. As such, it contains violence, spellcasting and ridiculous amounts of fun. Strewn about the story are links to relevant Magic cards. At the end of each chapter is a fanmade card related to the story so far.)