Seconds later they arrived in Arendelle, tumbling ungracefully in a tangle of arms, legs and clothes as Elsa rushed to get free of Jack and find her sister. She stood in her room, the early morning air flowing faintly through the open window, and took in the mess before her. Her room was unrecognisable. Chairs were overturned, pillows tossed onto the floor. The bedclothes were ruffled and crinkled, resting in a tangle of sheets and duvet. Her closet was thrown wide open, her clothes on display for the whole world to see. Garments complimented the pillows, making a collage of all sorts of colours.

Nothing was as she's left it.

'What happened here?' Jack asked, standing beside her. His voice was clouded to Elsa's ears. All she could hear was the pounding of her heart.

Elsa shook her head, her mouth clamped shut even though she willed it open. She walked away from Jack, inspecting the chaos, needing to move, to do something – anything – to keep from collapsing from shock.

'Who could've done this?' Elsa whispered, retrieving an overturned golden frame that had fallen next to her bed. A drawing resided behind the cracked glass. Elsa's heart melted as she recognised Anna's gift to her when she turned seven years old; a picture of stick Anna and stick Elsa – only discernable by the scribble of colour upon their circular heads – playing in a crayon grass meadow with pink and blue butterflies scattered randomly between them. A yellow sun with black dots for eyes and a mouth resided in the top left corner of the page. Elsa scanned the all-too-familiar drawing, her eyes resting on the message written in the pale pink sky: "Best sisters forever!"

Elsa clutched the frame to her chest as the tears gathered in her eyes. She sank onto the mattress and squeezed them shut as the tears began to flow.

'Hey, it's alright,' Jack whispered, coming up behind her. He climbed onto the bed and placed his hand tenderly on Elsa's shoulder, attempting to comfort her.

'Anna,' Elsa sobbed refusing to look at him.

'We'll find Anna,' Jack reassured. 'I know we will.' He wrapped his arms around Elsa, pulling her close to him. She leaned backwards into his chest as she sobbed, her tears clouding her vision. Her heart ached with a longing so great it was unbearable.

Jack's heart ached too, but for a different reason. He too knew what it was like to lose a sister. He knew all too well. The memories of her flooded him, almost bringing tears to his eyes.

Elsa's sobs filled the room, melting Jack's heart and sent his walls crumbling down. He tightened his embrace, pulling her even closer to him as it trying to make her part of him, and lay on the mattress.

Elsa, clutching the frame, didn't even try to resist. Her grief and worry for Anna was too much to bear. She felt a tug on the frame as Jack tried to take it from her and clutched it even tighter before reluctantly releasing it from her grasp and allowed Jack to set it beside them.

Jack stroked Elsa's pale blond hair, murmuring as he did so. Elsa lay, frozen, numb and unable to move. She closed her eyes and tried to slow her breathing to match the rhythm of Jack's hand.

They lay together for what seemed - to Elsa - like days but was only minutes. Every time Anna's name crossed Elsa's mind, fresh tears came as feelings of regret, love, pain, grief and worry swirled in Elsa's heart.

Jack murmured and stroked her head comfortingly the whole time but eventually it became redundant. It wasn't enough. Elsa shifted in his embrace, twisting her body around so she was facing him. She sobbed into his chest, clenching the material of his jacked in her fists, her tears leaving stains.

Eventually the tears stopped and Elsa's breathing returned to normal. There were no more tears left. She's cried them all. Get it together, she told herself. Control it.

She stirred under Jack's arms and he loosened them, giving her room to move. Elsa propped herself up on her elbow and looked at Jack.

'Thank you,' she said. Heat flooded her cheeks with embarrassment. She's cried in front of him and felt weak because of it.

'You're welcome.'

Elsa sighed and pushed her hair off her face. 'I'm sorry,' she said. 'I'm such a mess.'

'Hey, don't be sorry,' Jack replied soothingly, propping himself up just as she'd done. 'It's alright.'

'No, it's not. I shouldn't have cried over something so stupid. Especially not in front of you, or anyone really. I had no right to do that to you. I'm so sorry.'

'You have nothing to be sorry for,' Jack reassured, taking Elsa's hand in his. 'It's okay to cry. If a queen must only cry in the company of her own, what's the use of crying at all?'

'But –,' Elsa began.

'Shh,' Jack released her hand, placing his fingertips lightly on her lips. 'It's okay. Really, it is. I understand how you feel. No really, I do,' he added when Elsa began to protest he didn't. 'Let me tell you a story, okay? Before I was Jack Frost, I was someone else. We all were: North, Tooth, Sandy, we were all someone before we were chosen.

'I had a nice little house, a family and, like you, a sister who I would do anything to protect. One winter we went ice skating on a frozen lake near our house. But the ice wasn't thick enough and began to crack under our weight. My sister was so afraid. So to take her mind off the ice I told her that we were going to have a little fun instead. I told her we were going to play hopscotch, like we did every day.

'I went first, showing her it was as easy as three simple steps. I encouraged her to try but as she moved, the ice cracked even more. I picked up my staff and swung it around her, saving her from falling onto the cracked ice but not myself. I stumbled onto the ice and before I could move the ice broke. I fell into the freezing cold water and drowned. But the Man in the Moon saved me. He chose me because of my sacrifice to protect other children around the world. He chose me to be a guardian.

'So you see, I understand what you're going through. I know what it's like to have someone you care so much about, it hurts.'

'I'd die for Anna,' Elsa said. She looked over the man in front of her with new respect and admiration in her eyes. 'I would do anything for her.'

'I know,' Jack said. 'And that's why I know we're going to find her. I know that she's alright. I know because I can feel it.' Jack raised Elsa's hand and pressed it to his chest. 'In here.'

Elsa stared at their joined hands. Jack's chest felt warm under her fingers. She moved her gaze upwards, settling on his eyes. 'Me too,' she whispered, smiling.

Jack stared into her eyes, becoming lost in the sea of blue. He became all too aware of the lack of distance between them. It became smaller, as Jack ever-so-slightly leaned towards her. Elsa moved too, closing her eyes. Her heart pounded within, demanding to be released. She waited excitedly for their lips to join. To feel his mouth upon hers.

The door flew open. Elsa, startled, threw her face into the mattress. Jack scrambled off the bed, flying up to the highest point of the room.

'Queen Elsa,' a servant hurried over to Elsa's side. His face was flushed with exhaustion. 'Are you alright?' he asked urgently.

Elsa rolled over to face him. 'Kai,' she sighed in relief. A familiar face. Finally, someone to tell her what happened. Elsa sat up. 'What happened? Where's Anna?'

'Oh, your majesty. It was horrible. Terrifying. I've never seen anything like it. Horses, made of sand as black as night, came out of the sky and attacked us. They destroyed everything. All the houses in the village are in ruins.

'There was a man. He was tall and thin. He came with the horses, threatening us. He said we would all fear "The Bogey Man". Then he vanished, the horses with him.'

'And Anna?'

'Princess Anna and Prince Kirstoff weren't here. They left about an hour beforehand, with the reindeer and snowman, to go see some trolls. I have no idea when they'll be back.'

Relief flooded into Elsa, causing her muscles to go limp. Anna was okay.

'Queen Elsa,' Kai said. 'What do you suggest we do?'

Elsa sat in silence as she considered. What can they do? She didn't know. A drop of cold fell onto her head. Elsa glanced up to see Jack making gestures to remove the servant.

'Gather everyone who has no shelter into the great hall,' Elsa said rising and leading Kai to the door. 'Offer them food and drink, blankets and pillows. Make sure they're comfortable. We will provide shelter for all those who seek it until the damage is repaired.

'Send out patrols throughout all of Arendelle. Assess the damage and check for survivors. I want a quote as to how much damage has been done.'

'Yes your majesty,' Kai bowed and scurried off.

Elsa shut the door behind him, leaned against it and sighed. Jack floated down from the roof, unsure when to speak. Silence fell awkwardly between them as the reminder of what almost happened sunk in. Elsa cursed herself. How could she have been so stupid? Jack and her could never be. She'd made that perfectly clear. He didn't have feelings for her and she certainly didn't have feelings for him. I was distraught, she told herself. I didn't know what I was thinking. That's all.

'What do we do?' she asked, breaking the silence.

'I don't know,' Jack replied from across the room. He stood, rooted to the spot. He refused to move any closer to her. He was stupid, he realised. He took advantage of a distraught girl. Not just a girl, but a queen. A queen who has made it perfectly clear that she doesn't like him like that. Jack was ashamed to have intruded on her boundaries. He promised himself that he'd never do it again.

'The only thing I can think of is to go back to the pole and tell North. It sounds as though Pitch has found a way to Arendelle. We'll go get North and bring him here. He may be the only one who can help us think of something.' Jack took out a snowglobe from his pocket and tossed it at the wall. It exploded into a swirling portal of light.

Elsa nodded. 'Okay, but you have to go alone. I have to find Anna. I know where she is and I have to get to her. She, and the trolls, can help us.' And if I'm with you, who knows what may happen, Elsa thought.

Jack nodded reluctantly. 'Okay. See you later.' He dived into the portal, leaving Elsa alone.

With no time to waste Elsa ran out the door. 'Kai,' she called, racing down the halls towards the great hall. 'Kai?'

She rounded the corner and smashed into him, sending piles of blankets and pillows tumbling to the ground.

'I'm so sorry,' Elsa apologised as he bent to retrieve the mess. 'Let me help you,' she joined him on the floor.

'No, no, your majesty. It's my fault. I should've been looking. You needn't help me.'

Elsa waved away his polite objections, and gathered the pillows into a neat pile.

'Kai, I need you to ready my horse. I must go and try and find my sister.'

'Of course my lady,' Kai stood with the blankets and pillows piled on his arms and began towards the stables.

'Kai?' Elsa called after him. 'Let me take those,'

'But, your majesty-,' Kai began.

'No buts about it. I will take those for you,' Elsa insisted.

Kai reluctantly handed over the comforts and proceeded to ready Elsa's horse. Elsa continued to the great hall. Anna, she thought. I will find you.