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Prologue: Stranger

A/N: Elsa and Danny are sixteen in this story.

Elsa

"No!" a nearly frozen girl screamed stepping in front of her crying sister. Hans sword broke as it smashed into Anna's now completely frozen hands.

Hans stood shocked, unable to move. Elsa, the girl who was crying, didn't pay him any attention. Her entire focus was on her sister.

"No. No no no!" Elsa began to panic staring at her sister's body. "No!"

She stood up and walked towards her sister. She stopped in front of her and touched her cheek. She quickly removed her hand and backed away. "This can't be happening!" she wailed.

A storm began to start once more. "I killed her," Elsa whispered. "I killed my sister!" She took an unsteady step back once more. How could she have killed her? The trolls were supposed to have prevented this!

Then an idea formed in her mind. "The trolls..." she murmured. The idea lit hope once more in her heart. "The trolls!"

Elsa began running across the lake. The storm raced around her. The trolls could save her sister!

"Queen Elsa, where are you going?" A man's voice cried out to her.

"The trolls can save her! They've done it before!" Elsa called back not turning around to see the questioner. She raced across the lake into the forest surrounding it. She stopped for a moment to catch her breath after running for a while. The forest surrounding her was completely green as if it was still summer. A smile appeared on her face. She must be near the trolls.

Suddenly a dirt path appeared. Elsa raised an eyebrow but took the path anyways.

After travelling for a bit Elsa noticed the forest was not becoming familiar at all. Instead, it was becoming warmer yet darker. She stopped when she noticed someone on the path approaching her.

"Stay back!" She yelled afraid to hurt someone else. This person wasn't a troll so they couldn't help her anyway.

Whoever it was didn't heed her warning though. Instead, it seemed like he was coming for her. She tried to back away but realized she couldn't.

She was frozen in place.

The stranger walked until he was right in front of her. He stopped and removed his purple hood from his head. He had long white hair, tan skin and caring red eyes.

Elsa had no idea how red eyes could be caring.

"Elsa of Arendelle, no need to be afraid. I can help you." The man soothed.

Elsa tilted her head. "How can you help me? Do you know how to save Anna?"

"Yes, I do. But before your sister can be saved I need to ask for a favour."

Elsa's eyes glimmered in hope. "I'll do anything to save Anna."

"My charge is in danger and needs your help. He cannot face a new threat alone."

"What makes you think I-"

"I don't think, I know. All will be revealed in time." the man interrupted.

"Alright, I'll help for Anna's sake. Do you promise Anna will be... Unfrozen and alive?"

"I promise."

Jack

A pale boy with white hair sat in the bottom of a canyon depressed. Pitch had defeated him and had taken away his powers. None of the guardians knew or cared where he was. He couldn't even see the man in the moon!

He was at his lowest point.

Jack stared at the item that had caused him so much grief; his collection of baby teeth.

How he had once wanted it. Now he hated the item. He chucked it far away from him. Baby Tooth, a young hummingbird-like fairy, went off to get the capsule. Jack watched as she went off to get it.

He suddenly felt someone beside him. He turned and saw a purple hooded man.

"Who are you?" Jack asked depressed.

"I think you in this world call me the man in the moon." the figure replied.

Jack's eyes widened. "Have you come to help us fight Pitch, Man in the Moon? Wait... How do I know you're Man on the Moon?" he asked the purple cloaked man.

"You have to trust me."

Something in Jack's gut told him he was indeed Man in the Moon.

"Before Pitch is stopped I need a favour, Jack Frost."

"What?" Jack asked curiously.

"I need you to help a teen go up an extremely dangerous foe."

"More dangerous then Pitch? Should the others come along as well?"

"There is no time to get the other guardians. "

"What about Baby Tooth?" Jack asked remembering his comrade. He turned to where she had left and seen her suspended in mid-air.

"She won't even know you left."

"And the children? Pitch is sure to harm them."

"It'll be like no time has passed."