Susan slowly opened her eyes, looking up in Martha's face.
"Is she gone?" she whispered. Martha nodded, giving a faint smile.
"We're running out of air", she said when she noticed Susan's worried look. "It's best not to talk too much."
Susan nodded, slowly sitting up. She noticed Faya and Logan not too far away, sitting with their backs at the wall.
"Where's the Doctor?" Susan asked. Martha looked out through the window. Susan blinked twice, before she rose and quickly walked out of the room.
"Where are you going?" Faya asked.
"To help him", Susan answered.
"What can you do against a giant?"
This time it was Logan who asked the question.
"I do not know, yet", Susan sighed and walked away through the corridor. She turned left to the principal's office and took the gun that lay on the floor. If there was a time when she would need it, it was now.
When she walked back into the corridor, she noticed a hole in the roof. She looked up into the universe, trying to see if the Doctor was there. It was impossible to say, but she thought she still heard the giant walking around out there. Though, he couldn't be too close since the ground didn't shake too much.
Susan looked around and noticed a table and some chairs. Hopefully they would help her get up on the roof. She placed the table right beneath the hole and then put the chair on top of it. When she climbed up, she was able to get most of her upper body up through the hole. She placed the gun in front of her and took a jump off from the chair. The chair then fell off from the table and she was dangling halfway through the roof. With a groan she managed to put up her left leg on the roof and roll onto it, gasping for air. There must be some kind of a bubble around them, she thought, as she was able to breathe out here as well.
When she managed to rise, she noticed the Doctor laying some metres away. She rushed to his side. He was unconscious, but she couldn't find any wounds on him. Maybe the giant had squeezed him with his strong hand? In any case, the giant had hurt him, a man that she first hadn't believed in but then had turned into a friend.
"Hey!" she called to the shadow of the giant in the distance. The shadow stopped and seemed to turn.
"It's me you want, isn't it?" she bellowed. "Then come and get me!"
She felt the ground shake beneath her feet as the giant came back, his small, red eyes glooming in the dark. Susan raised the gun. How far would she be able to shoot? She didn't know, but she knew she had to do it before he was able to reach her.
He wasn't far away now. She could feel the air disappearing from her lungs. It was harder up here.
"Killed my master!" the giant roared, pointing with his finger towards Susan. She pulled the trigger, a bullet hit the giant in its mouth. He roared with pain and started running. It was hard to stand up on the roof while the Moon shook violently.
"Revenge!" the giant called. Another bullet flew into his mouth, he roared again. But he continued forward. Susan started to walk backwards. Where could she hit him so he died? It was impossible to penetrate his armour and reach his heart with such a small gun. She rose her hand once again, this time aiming higher. The third bullet hit the giants left eye and black blood started pouring down his cheeks. This time, the giant stopped and tried to get the bullet away.
"Susan…"
The whisper was barely heard through the giant's roaring, but she did hear it. And she sank down beside the Doctor. His eyes were not open, but he was speaking; he was alive.
"His ear", he whispered. Susan looked up at the beast once again and pulled the trigger for the fourth time.
But no bullet came. She had run out of them.
"Damn!" she cursed. The Doctor slowly rose behind her, steadying himself against her shoulder.
"Here", he said, placing something in her hand. She looked at it in surprise. It looked almost like a pen or some kind of screwdriver, but with a blue lamp in the end of it.
"But…"
"Here", he whispered again, grabbing her hand and raising it. He guided her fingers to the right button and when the giant turned his side towards them, they both pushed the button. The sound that came from it seemed to make the air that was still around them vibrate and the giant, outside the bubble of air and not used to sounds, as there are no sounds in space, roared in pain once again, placing his hands over his ears. But it didn't help, just like the witch he began to turn into dust and was soon gone. The Doctor released her hand and fell back to the ground. Susan understood why; they'd run out of air. She was coughing, trying to get what oxygen that was left. The Doctor looked at her, his eyes were red and she guessed her own started to look the same.
With the support of one another, they managed to get to the hatch that the porter used to get up to the roof. They climbed down the ladder, or more fell down it, as none of them had the strength to climb, and then sat together in the end of the corridor. Susan slowly felt her consciousness drifting away.
"Susan", the Doctor whispered once again, while he was trying to breathe. She gave him a thin smile, before her eyes fell close.
"It's raining", he whispered, leaning his cheek on her head and closing his own eyes.