Prequel is not required reading but it helps. Actually, it's literally summed up in about a paragraph at the start of this story.
After the last year's failed prank, Cadence sets up a revenge prank on Shining Armour with Twilight and Chrysalis. Surely things will go better this year and no one will double cross each other again... or maybe getting double crossed would be better than what actually happens.

Cadence, Chrysalis and Shining are roughly 16-18 and Twilight is 10-13. Give or take. Also humans.

Trigger warning: Mild psychological abuse that honestly she brought upon herself.

No humanised alicorns were harmed in the making of this fic... as long as you don't count Chrysalis as an alicorn.
Trilogy coming next April fools.