Twilight Sparkle Buys Bread.
...Yes, that's the entire description. What, you want more?
...You're not going to leave until you're satisfied, are you? Fine.
Along the way, Twilight Sparkle battles cunning thieves, fast pegasi, Nightmare Moon, and even cupcakes! It's a journey you have to see to believe!
...Okay, not really. But there really are cupcakes, I swear.