A little filly Twilight Sparkle takes her brother to visit one of her favorite conventions. He might not survive.
Based on this story:
Twilight Sparkle Takes Pinkie Pie To LineCon by silvershinepony -- A fun little story that changes the meaning of 'line'. Recommended if you like one-liners.
Linear Transformation by SilverAlchemist -- Recommended if you liked this story and want more.