Prologue- A Million Diamonds

Goldy makes a dangerous deal with a Demon, turning each of her friends into puppets in a game, including herself. She puts everyone at war unknowingly, and soon realizes the mistake she's made. But what's the only way to win this game? It's to get all of the cards on the same side.

Disclaimer: I have been looking at AUs, and I want to say now that this is completely unrelated to the War of Hearts AU. However, that AU is amazing, and I sort of wish I took inspiration from it.