Title: Thawing a Frozen Heart

Summary: This story takes place along the storyline of Frozen, with a few additions. It starts 3 months after Elsa's accident with Anna while they were playing, so Elsa is already in her isolation. Jack befriends a young Elsa, but they are separated when her parents die. When they are reunited, they have to face fear both inside and out. This is a crossover fanfic between Frozen and Rise of the Guardians. The pairing is Jesla, Jack Frost and Elsa, but you guys will probably figure that out pretty quickly.

Rating: This fanfic is rated T for some mild violence. It's not too bad though, it's safe enough for my 13 year old sister to read. There's no harsh language or smuttyness.

Author's Note: This is my first fanfic ever! I'm so excited! I was inspired to write when I read a fanfic by ReyZel616, so just a shout out. Thanks, you're awesome. Just a warning, I LOVE cliffhangers, and I've been told that I'm good at writing feels.

Disclaimer: I don't own any of these characters, or the storyline of Frozen. All rights go to Disney and Dreamworks for their stuff.

Chapter 1

It's been three months since the accident, but I still can't control my powers. My ice never seemed to bother me, but now just the sight of it frightens me. Three months ago, I accidentally shot ice into my sister's brain while we were playing. At least it wasn't her heart. That's what the troll had said. It wasn't my fault! I didn't mean to hurt her! It was an accident that's all! Three months, and I still was no closer to controlling my powers. The troll said that too. He said I have to learn to control my powers, but I just can't! Everything I touch just seems to freeze over! Father says not to worry; that I'll learn eventually. I just don't want to hurt anyone.

I bury my face into my pillow and try to go back to sleep. Eventually I give up and just lie there staring at the frost creeping over my ceiling. "Don't feel, don't feel!" I whisper to myself, squeezing my eyes shut. Suddenly I hear a noise outside my window, like a horse neighing, but somehow more eerie. A shadow swoops across my window, causing me to jump. "Hello?" I whisper nervously, hoping there wouldn't be an answer. A large black something rams into my window with enough force to thrust it open. The figure tumbles to the ground, obscured by the shadows of the night and what looks like black sand scatters all over the floor. Cold air whips in through the open window, and I pull my covers closer around me, more out of fear than the chill. I had only seen black sand like that before in my nightmares. It belonged to that awful scary man in black, the bringer of the nightmares that started after the accident. "Pitch Black?" I squeak, sincerely hoping that this is just a nightmare.

The figure in the shadows groans and stirs a bit, but does not get up or make any move to attack me. Curious, I lower my blankets slightly so I can get a better look. It doesn't look all that threatening, and it certainly isn't Pitch, too short. "Hello?" I try again, this time not quite as nervous. The figure still doesn't respond, so I muster up the courage to go close the window, which is beginning to let some snow in. I tiptoe past the strange thing, which I decided must be sleeping, and pull the window shut. The shadow shifts and I jump a little, my surprise causing the window's latch to be covered in ice. "Now look what you did!" I whisper at the shadow, scolding it. "You've gone and made me freeze the window shut! Now how will I get you out?" The shadow only groans again. My curiosity gets the better of me once more, and I creep closer to the shadow to see what it looks like. As I get closer and my eyes adjust to the darkness more, I could see that the figure is a boy. He's older than me, but I can tell that he isn't quite an adult. His skin is pale like the moon, not a sickly grey pale like Pitch. He's wearing simple brown leggings with a dark blue hoodie and no shoes. What catches my attention the most however, is his shockingly white hair the color of snow. I've never met anyone who had hair that color; it's lighter than my own pale blond hair.

The boy groans again and rolls over, revealing a smooth and kind-looking face, as well as a large bump on his head. Poor thing, he must have banged his head pretty hard. How did he manage to run into my window? He would have to fly to get this high. "You can see me. Interesting." I come out of my thoughts to see a pair of light blue eyes staring at me. I shriek and jump backward, spilling a small flurry of snowflakes in my wake. The light blue eyes widen, and the boy sits up. He's looking at my snowflakes with astonishment.

"I'm sorry," I squeak, beginning to ramble, "I didn't mean to sorryI'vebeentryingtocontrolitbutIcan't!"

"No, no, it's ok" The boy says, "I'm just surprised that's all. I never expected to meet someone else with ice powers."

Someone else? What does he mean? "Who are you?" I ask.

"You don't know?" he asks, looking surprised, "Usually people can only see me if they believe in me. I guess you can because you're a winter spirit too." Winter spirit? What does that mean? I repeat my question. "Oh. Sorry. Yes, I guess I should introduce myself then," he says, standing up, "my name is Jack Frost, what's yours?"

"Elsa" I say, standing up straighter and clasping my hands like a queen the way my mom had taught me.

"Nice to meet you Elsa" he says, smiling and extending his hand for me to shake it. I shy away from his hand. "It's ok, I'm not going to hurt you." He says.

"I'm not afraid of you," I huff, crossing my arms into my chest so my hands are covered, "It's just that I anything I touch freezes. I could hurt you."

"I think you're too nice to hurt anyone." Jack giggles.

"I don't do it on purpose!" I cry defensively.

"Here, let me show you something." Jack lifts his hand and a tiny snowflake forms in his palm. Now it's my turn to gasp. Jack chuckles and flicks the snowflake toward me. I catch it in my hands and smile at Jack. Finally, someone who can understand me!

"It's nice to meet you too Jack" I giggle, finally letting him shake my hand. "I'm sorry you ran into my window. What were you doing up this high anyway?"

"I was doing my job." He says vaguely, lifting a long, crooked, wooden staff from the floor and leaning on it casually.

I raise an eyebrow. "Your job is to come crashing into little girls' windows?" I laugh.

"No" he blushes, "that was accidental."

"So?" I demand, crossing my arms like my mom always did when she was serious.

"You're not going to believe this," he laughs, "but I am a guardian. I guard the hopes and dreams of children all over the world, and I'm not the only one, there's plenty of us." I think my look told him I was not impressed because he quickly tried to explain more. "I was actually fighting a pack of nightmares when one of them pushed me into your window. Sorry about that."

"You fight nightmares? I gasp. I never knew that nightmares could be fought.

"Yeah, I know, it's awesome right?" Jack says excitedly.

"How's your head?" I ask, once again noticing the purple lump protruding from Jack's forehead.

Jack reaches up and tentatively touches the bump, wincing as he did. "Gosh, you have a hard window, missy! But I think I'll be ok."

I laugh. "Ok. That's good. Thanks for coming Jack. Maybe we can be friends. It was nice seeing you, but I should probably go to bed, and you should get back to fighting nightmares and stuff."

Jack smiles, "Okey Dokey Elsa. Should I come visit you tomorrow then?"

I nod, "See you tomorrow guardian." Jack gives me a mock salute and walks over to the window, quickly unfreezing the latch and swinging the window open. He gives me a little wave, then to my surprise, slides out the window! I rush over to the open window, expecting to see Jack plummeting to the ground. Instead, I see him swooping through the air, ending a huge loop then hovering mid-air to look back at me with a cute grin that just made me laugh. I wave, and he waves back before taking off into the night sky. I giggle and close my window. I think I'll be able to sleep now, knowing my guardian is watching over me.

Thanks so much for reading! If you liked it, please review, that would be great. I'll have more chapters coming soon!