Harry retched. Bloody Draco he thought, trying desperately to get the shrinking potion off his shoulder. Only problem was, once he touched it with his hands, his hands began to shrink.

"ARGH" he screamed, "I'll GET YOU!" he yelled to a retreating Malfoy. His only response was a smile and a wave.

He watched Hermione and Ron struggling around next to him. Harry caught a glimpse of himself in the mirror. He had to laugh, because really they did just look ridiculous. Ron's arms were shrinking, so his torso looked huge. He was trying to help Hermione, who's' top half of her body was shrinking, leaving her head the right size, which meant she couldn't hold it up, and Ron; having no arms, was holding her head up with his chest.
Harry collapsed with laughter, he couldn't help it, Ron's face was going bright red because Hermione's skirt had shrunk as well, and she was desperately trying to hold it down but wasn't having much luck.

"Ron…look…soo…funny!" Harry spluttered, giggling.

"Shut it Harry" Ron snapped back, but began laughing, which caused him to topple over, Hermione crashing down after him.

"Well really! You boys! I mean honestly, look at us." Hermione exclaimed, the hint of a smile on her face.

Dumbledore came rushing into the room, closely flowed by Madam Pomfrey. He looked highly amused, and set everyone straight in a matter of minutes. They were escorted to the sick bay on moving stretchers, being cheered by students along the way.
Suddenly Harry's stretcher left the procession and veered off down its own corridor.

"Harr…" he heard Ron's voice disappearing around the corner.

Harry tried jumping off his stretcher, but the more he tried to move, the faster it went. Eventually he lay back and watched as the castle walls flew by, the speed was dizzying, and he found he could not sit up, without being sick. The stretcher began to slow down, and Harry bolted upright, trying to understand his new surroundings. This part of the castle he had never seen before, and by the looks of it, he would never see it again. He guessed that it was a dungeon, of some kind, yet the dapples of sunlight streaming through the window suggested otherwise. The walls were a bottle green, and where there were once rich coloured tapestries, hung only threads. The stretcher stopped unexpectedly, and flung Harry off onto the ground.

"Ow." He mumbled angrily, rubbing his head where it hit the cold stone. He stood up, dusted himself off and looked around. Shuffling over to one of the windows he could vaguely make out the great lake, and the Hogwarts grounds.

"The Hogwarts' grounds? But, I didn't leave the castle…. did I?" Harry Pondered. "I could have sworn…"
An abrupt rasping breath stopped Harry's thoughts.
"Who's there?" he asked…
The breathing continued, and a scraping sound now joined it.
"Lumos," Harry whispered, "come on then. Who's there?"
The breathing and scraping stopped.

As fast as light the shutters slammed shut, and his wand went out. The room temperature dropped and Harry's breathing intensified. He could just see his own breath coming in ragged, icy gasps from his mouth.
A warm feeling washed over him and he felt a presence right in front of him. He shuddered.

"Who's there? Who is it? Show YOURSELF!" He yelled.

The voice came strong and deep, and Harry felt himself grow weak.

"Harry Potter, it is time."