This is my first Frozen fanfiction, so bear with me! Also, I know a chunk of the RotBTD fandom are not exactly happy with Frozen being added into the group, so please, no flames! A musical version of this story is being written by jasminejohnson41, so if you're interested, please check it out!

Prologue

"Elsa, Anna," called the Queen of Arendelle. She folded her night gown against her as she sat down on a little wooden chair beside one of her daughter's beds. "It's time for your bedtime story."

Five year old princess Anna excitedly popped her head up from above the blankets, her strawberry blonde hair still wavy after being undone from it's regular braid. "Come on, Elsa. Mom's gonna tell us a story."

Elsa hoisted herself onto her younger sister's bed. Dressed in turquoise and teal colored pajamas, Elsa seemed just as sweet and innocent as her sister. "What story are you telling us tonight, mother?"

"Well," the queen chuckled, bringing out a book. On the cover was an image of four interconnecting rings and within each was a symbol. "It's about a group of warriors called the 'Defenders of Realms'. They travel across the different worlds to fight evil. It's members constantly change as the old ones retire and new ones are selected."

"Do they really exist?" asked Anna, enthusiastically. "I hope they do. That way, we can join them. And Elsa can go around freezing all the bad guys!"

"Come on," said Elsa, slightly annoyed, "I want to hear mom's story."

The queen smiled warmly. "Our story begins with the moon. So big, so bright, it seemed to chase the darkness away." Her two daughters shifted themselves into comfortable positions atop the covers, Elsa propped her head on the palms of her heads and listened intently to her mother recounting the tale of action, adventure and friendship.

Warriors who have been granted powers from the sun, a swashbuckling hero, and legends of a bearded man in a red suit going around delivering presents to children all over the world. Elsa allowed her imagination to travel with her mother's voice, vividly visioning what the heroic battles would seem like, and wondering if she did as Anna suggested, and went around using her ice powers against the different villains.

Eventually, the queen wrapped up her story and stood up. "That's it for tonight. Off to bed now, girls."

"Aw," murmured Anna as she reluctantly slipped back under her blankets. "I'm not even sleepy yet. Tell me more, mother."

"Maybe another time, sweetie." Her majesty gave Anna a quick kiss on the forehead. "Good night, Anna. Good night, Elsa."

"'Night, mother," both girls sang in unison as the queen closed the door with a small click. The room fell silent. Through the clear palace windows, Anna could see the magnificent stars. At the center of the brilliant night sky was the moon. It really did seem to make one feel safer.

Anna spent a couple of hours staring up into the heavens, fantasizing adventures of courageous heroes. Maybe she could one day leave Arendelle and travel to strange new worlds. No matter how long time ticked on, sleep still refused to come to her.

Giving up to boredom, Anna slid out of her own bed, and tiptoed quickly across the room over to her sleeping sister. After a few attempts to wake Elsa up, only given sleepy murmurs in response, Anna resorted to using her trump card. She hopped onto the mattress. "Do you wanna build a snowman?"

Prologue finished, huzzah! Chapter One will be up soon, hopefully. This is a RotBTD fanfiction, so the other characters will be introduced soon. Also, the Jack, Hiccup, Merida and Rapunzel will not be meeting for the first time in this story. I am considering that as a spinoff to my RotBTD fanfiction series, The Defenders of Realms. However, reading it is NOT NEEDED, as I will not throw in any references or plot links. All you need to know is that they have met.

I hope you enjoyed the prologue and looking forward to the next chapter. If you didn't, well, thanks for checking this story out anyway.

~Kyra