A/N: Sorry about the delay. Another massive thanks to /u/cupcakes_please for the beta reading!

A firestorm appeared on the north mountain. Hans could only watch as the figure flexed its muscles. Power flowed through his body like a raging rapid. The firestorm drew Elsa and Anna's eyes to the window.

"Whoa…"

"Anna, I think you need to get somewhere safe."

"Why?"

"It seems that our guest is a bit early." The magic radiated from the mountain as Elsa cut the rope that bound the two sisters together. The firestorm started to move down the mountain and towards the castle. "Get to the safe room!" Anna ran down to the safe room that was only accessible via a secret passage that went under the castle dungeon. Meanwhile Elsa made her way to the castle gates. The citizens scrambled to avoid the firestorm. It stopped at the gates and started to dissipate. The guards caught a glimpse of the figure at the centre of the storm. It appeared to be Hans and a crossbow bolt was fired towards him. It was vaporised in mid-air by a plume of flame which then proceeded to engulf the guard that fired it. He was reduced to a pile of ash before he even had a chance to scream.

"You are to send Queen Elsa out here at once." The figure demanded. Elsa heard the instruction and stepped outside the walls. She had seen the incineration first hand and knew exactly what Hans – or the thing that used to be Hans – was capable of. "Well, that was quick."

"What do you want?" Elsa asked

"Your magic poses a threat. I am here to correct that." The figure conjured a sword of pure flame.

"Can't I talk with them first?"

"They don't talk."

"Very well." Elsa conjured a sword and shield of ice. She had no fighting experience but was hoping to be able to use her powers to her advantage. She knew that the odds were against her. She wished that she had a chance to say a proper goodbye to Anna but she would still do her best to stay alive. The figure laughed.

"Is that really the best you can do?" The figure then charged at Elsa. She used her powers to deflect the blow.

"Even our most inexperienced knights know that is a very dumb thing to do." The figure took another swipe. Elsa dodged it. The figure kept attacking. Elsa was able to parry every blow. The figure backed away again.

"You time ends now!" The firestorm restarted around the figure. Balls of fire erupted towards Elsa. She was able to deflect them with ice but it was not easy. She sent a barrage of ice into the firestorm. It turned into steam before it even entered. The figure retaliated by sending a constant stream of fire towards Elsa. She was barely able to block it. The figure was powerful but surprisingly inexperienced. Elsa knew that she could win but it would not be easy.