Eight years have passed since Sweetie, Applebloom, and Scootaloo formed the Cutie Mark Crusaders—enough time for the land of Equestria to grow and develop. Magitechnology has advanced beyond what the three could have ever imagined. With the release of a new device that lets ponies play video games in which players are transported directly into the game's world, Scootaloo wastes no time in inviting her two best friends into the realm of Griffon's Reach Online—a world where the rarest of spells, the grandest of cities, the strangest of creatures, and the mightiest of monsters can be found.

However, what was supposed to be a fun pastime with friends turns into something much more sinister…