Broken promises, lost tickets, and a looming storm threaten Diamond Tiara and Silver Spoon's perfect plan for Nightmare Night, but that doesn't stop them from picking on the one filly having a worse night than them: Scootaloo.
A lost bet forces Diamond Tiara to ask Snails to a dance. But when Snails turns to Sweetie Belle for help with impressing his date, she develops feelings for him. And so what was to have been a simple victory for the CMC gets a bit more complicated.