This story takes place right before "Bridle Gossip"

Early one morning, Equestria wakes up to hundreds of ponies turning into cows, including the princesses themselves. Despite their bovine state, Princess Celestia and Luna, along with Princess Cadance, Shining Armor Rainbow Dash, Pinkie Pie, and Twilight, try to keep the peace and learn to deal with their new lives while researching any possible cure. Meanwhile, Applejack, Rarity, and Fluttershy go on an adventure looking for a mysterious zebra named Zecora, who may hold the key to turning them back into ponies.

Cover art done by: Mix-Up