Na-shuul, a violent and dark pony, dabbled too far in to the dark arts of unicorn magic. His punishment for such a transgression was to keep the very things he wished to summon inside of The Inferno. Na-shuul has been kept sealed by the strong runes underneath Canterlot, however these runes are fading, and a servitor of Na-shuul has kidnapped Rainbow Dash. With all others too busy fighting off the dark servitors at Canterlot, Fluttershy must delve in to The Inferno to save Rainbow Dash, and all of Equestria.

Fluttershy is usually known as a quite peaceful pony, never the one to get in a fight. But there is a more vicious side she tries to hide, which was sadly shown by Iron Will's horrid methods. She only publicly shows it when she is playing Stormball, a famous sport played by pegasus ponies everywhere. When she learns Rainbow Dash's idol, Lightning Striker, is to be out for the next season, she tries to get Rainbow Dash to play for the Ponyville Hornets. Will she succeed at teaching Rainbow how to be a good Flash-receiver?