Introduction
The girl appeared first. Burned, battered, blistered, and so emaciated that Kristoff first thought she was dead.
Fifteen feet she fell from the air before landing unceremoniously on the bale of hay in Kristoff's sled. Wheat exploded everywhere. Sven jumped at the sound and quickly skidded to a stop while Kristoff grabbed a lantern and inspected the new passenger.
He gulped. The girl did not look good. In fact, she looked bad. Extremely bad. The girl was so skinny, she might have been a corpse. Her face and limbs were bony. Her clothing was torn, burned, and even bloody in places. There were blisters and bruises all over her body, and her long blonde hair was dirty and blackened with soot.
Kristoff reached to check her pulse and jerked his hand back as the girl suddenly woke up and pulled a sword on him. No, wait, not a sword - a bone. A bone in the shape of a sword.
"Whoa, there, easy now," Kristoff said reassuringly. The girl stared at him, then stared at Sven, and then again at Kristoff. Her stormy-grey eyes looked cold and calculating.
Sven tensed and grunted anxiously, ready to jump into action, but Kristoff held the reindeer back. The girl didn't look threatening. In fact, she looked kind of frightened. She reminded Kristoff of a cornered animal. A cornered, wounded animal with nothing to lose.
"It's all right," he reassured again, though the girl did not look reassured. "My name is Kristoff," he said, placing a hand on his chest. "And this is my friend, Sven. We're friendly."
This still didn't seem to do much for the girl, but the tip of her sword dipped lower. Her attention seemed suddenly drawn to her surroundings. A frosty breath escaped her lips and she scrambled back off the cart in a sudden panic. She made a valiant effort, but didn't make it ten feet before the cold and snow made her crumple to the ground.
Kristoff leapt off the cart, blanket in hand, and hurried to wrap her in it. The girl coughed and shivered in his arms. She looked Kristoff right in the eyes and barely managed to choke out one word before passing out. "P-Percy . . ."
Percy? Kristoff glanced about the forest for signs of another person, but it was too dark to see. "Hey. Hey, who's Percy?" he asked, trying to shake the girl awake. "Is someone else here with you?"
She was out cold.
Far below, the lights of Arendelle shone in the distance, and Kristoff knew what he had to do. He sat the girl in the front seat, bundled her from head to toe, and turned the sled back down the mountain.
The visit to grand Pabbie would have to wait.
Sven grunted worriedly as he pulled the sled past some trees and Kristoff spared the girl another glance. Her lips were turning blue. At least her hair isn't turning white, Kristoff noted absentmindedly.
He lashed on the reins. "Faster, Sven!"
The sword appeared second. A shimmering bronze blade that blinked into existence above the treetops and struck a snow-topped boulder. Beyond it, a disembodied arm fell from the sky into a ravine. A disembodied arm bearing an SPQR tattoo.
A/N: And there goes chapter one. Don't forget to leave a review if you enjoyed. This story will span beyond the Percy Jackson and Frozen universes, but that is where I will start. Those of you who have played a certain game might even be able to guess already who the third crossover universe will be . . . heh heh . . . You'll have to wait to find out! Again, review if you enjoyed, or even if you didn't! Critiques are appreciated.