"I'm Pinkie Pie, and I nominate my friends Discord, Princess Celestia, and Twilight Sparkle to complete the ALS Ice Bucket Challenge! You have twenty-four hours to donate ten bits and dump a bucket of ice water on your head!"

"Uh, Pinkie, what's ALS?"

And thus, begins the story of how Twilight Sparkle discovered another case of illegal dimension-hopping, learned about an amazing baseball player, donated to charity, and got very wet.