Shining Armor makes a fanfic on Mane-iac being married to a hero in Power Ponies, but a potion accidentally falls onto his sheets of paper and the mad mare is brought to life. Now, he must hide Mane-iac from his wife while hiding his wife from her.
Set in the Power Ponies universe. Hum Drum breaks The Mane-iac's heart, so she decides a little payback is in order. Starting with her former love interest for obvious reasons.