An ominous hooded figure waited in a moonlit clearing. They listened intently for the sound of thundering hooves that would signal the arrival of their contact. The wait was short, as a handsome young man came riding through the dark forest. The moonlight revealed him to be Hans of the Southern Isles, stripped of his royal title because of his crimes in Arendelle. He begrudgingly dismounted his horse and approached the figure.

"Alright, this better be important, wizard."

"Mad scientist! And yes, it is quite important." The figure drew a silver vial from his cloak. "I have created a formula that can switch the brains of two individuals. Because you seek revenge on Arendelle's royal sisters, and their throne, I propose that you take my mixture and use it on the queen." He gave Hans the vial. The former Prince examined it.

"Doesn't it need two people to work?"

"People or animals. That reindeer the princess's boyfriend has. That would be perfect. The powers and ability to talk would be eradicated in both creatures, so they couldn't ever tell anyone. Everyone will think the queen has gone mad and will lock her away, and you can make sure the reindeer is taken care of when you assume the throne."

"Perfect. How do I do it?"

"Slip two drops into their favorite foods, and send the formula injected food as gifts from their allies. No one will think twice."

"Excellent. All I need are some chocolates, some carrots, and a few forgeries." Hans cackled into the darkness. "Soon, Arendelle will be mine!"

"Be careful Hans, if another human somehow takes the mixture, the queen's powers will remain in her body, no matter who's brain is in there. They only disappear in an animal and human switch." Hans wasn't listening. He was already on his horse and riding back to his home. And that's how it all began...