"What is it, buddy?" Kristoff asked.

The howling winds pushed against Kristoff as he headed back up the mountain, away from Arendelle.

Sven was lagging behind. The reindeer looked longingly back at Arendelle and the castle. He shook his head and whinnied. Kristoff kept walking, ignoring him. Sven charged ahead, passed Kristoff, and then stopped in front of him. He faced him and looked Kristoff directly in the eye.

He adjusted his goggles and wrapped his scarf tightly around his face.

The reindeer nudged his antlers into Kristoff's side.

Sven shook his head and wiggled his mouth.

"I don't understand you when you talk that way," Kristoff told him. In a flash, Sven bucked Kristoff and lifted him up with his antlers. "Hey! Stop it!" Kristoff shouted. "Put me down."

Sven dropped him straight into the snow, hard. "No, Sven," Kristoff said. "We're not going back." Sven snorted his disapproval.

"Hey, watch it," Kristoff said, annoyed. "What's wrong with you?"

"She's with her true love." Kristoff saw Sven's doubt. He glanced back at the kingdom to make his point. But to his surprise, he saw a strange new storm swirling above the castle. He could see dark clouds forming, and more ice on the castle walls, putting it into an even deeper freeze. "Anna!" he cried.

Anna was curled up on the floor of the library. She had made it to the door but was now too weak to stand. No one could hear her whispered cries for help. She was so cold -- and her heart ached.

At that moment, the door handle jiggled. Anna was barely able to raise her head to see who it was. The lock clicked. Anna could see a carrot wedged into the keyhole…

"Olaf," Anna said. "Get away from there!"

Instantly, Kristoff changed his course and took off running toward Arendelle. Sven scrambled and raced up behind him. He ducked his head and lifted Kristoff with his antlers, then threw him onto his back. The duo raced down the hillside.

Suddenly, the door flew open. It was Olaf! The snowman pulled his carrot nose out of the lock and put it back into the middle of his face. He was very proud of himself, but his happiness melted the moment he saw Anna.

"Anna, no!" he called. He ran to the fireplace and struck a match. In seconds there was a large, roaring fire.

"Whoa!" Olaf exclaimed, taking in the sight and feel of the fire. He was a little scared, but he couldn't resist the warmth coming from the fireplace. "So that's heat," he said. "I gotta say, I still like it!" He hurried over to Anna and brought her closer to the fire. "So, where's Hans? What happened to your kiss?"

"I was wrong about him," Anna said. "It wasn't true love."

Anna sighed heavily. "I don't even know what love is anymore."

"Please, Olaf," Anna managed to say. "You can't stay here. You'll melt."

"Kristoff loves me?" Anna asked. Her eyes widened.

Olaf nodded. "You really don't know anything about love, do you?"

"I'm not leaving until we find some other act of true love to save you," Olaf said. He sat down next to Anna. "Got any ideas?"

"Some people are worth melting for," he said. His face was quickly losing its shape. Olaf tried to push up his sagging head. He ran and sat behind Anna, trying to escape the fire's heat. "Just maybe not right this second."

Olaf didn't want to believe it. "But we rode all the way here," he said.

Anna looked at Olaf. He was dripping from head to toe! "Olaf, you're melting!" she cried.

"That's okay," Olaf said. "I do." He sat up a little taller. "Love is putting someone else's needs before yours -- like, you know how Kristoff brought you back here to Hans and left you forever?"

"Wow, he's moving really fast!" Olaf said. "Huh, I guess I was wrong. I guess Kristoff doesn't love you enough to leave you behind."

A window across the room blew open and a cold gust of wind swept through. Anna shuddered. Olaf ran to the window to shut it. "Don't worry," he said. "I've got it. We're gonna get through…" He stopped talking and stared out the window. He leaned forward and squinted at the horizon. "Hang on, just one second. I'm getting something!"

"They are?" Anna asked. She tried to stand up to see for herself.

"Help me up," Anna said, struggling. "Please."

He reached through the open window and grabbed an icicle off the window ledge. He flipped the icicle around and used it as a telescope. "Hey, Kristoff and Sven!" he shouted when he realized who was running toward the castle. He turned to Anna excitedly. "They're coming back this way!"

"No," Olaf told her. "You need to stay by the fire and keep warm."

Anna was adamant. "I need to get to Kristoff."

"Why?" Olaf asked. Then he paused. "Oh, I know why! There's your act of true love right there, riding across the fjords like a valiant, pungent reindeer king!" He reached for Anna. "Come on!"

Sheets of ice began to break through the library walls. The cracks grew across the walls, and the room began to collapse. Anna and Olaf hurried out of the library just in time. Together, they struggled to make it through the hallway, dodging ice as it appeared in their path.

"Back this way," Olaf said, pulling Anna. But every path they tried was blocked by ice! "We're trapped!" he shouted.

Anna spun around and spotted a way out. She took Olaf's hand and they made their way over to a window, broke the glass, and slid down an icy ramp. Olaf picked up more snow as he went. They landed safely outside the castle and took off toward Kristoff.