It wasn't a very bright day, but it wasn't particularly dull, either. Harry, Ron and Hermoine walked round and round the Schools grounds, trying to think of something.
"If only Dumbledore was here!" Ron said bitterly.
The night before, after visiting Hagrids, the group stumbled across a peculiar rock.

The night before

"Well the treacle fudge was MUCH better" Commented Hermoine.
"Yeah my teeth don't hurt as much now" Replied Ron, grinning. Harry wasn't really concentrating on the conversation though.
"Harry, what is it?" Asked Hermoine curiously.
"Look at this" Said Harry bending down. He picked up a crystal stone.
"Wow!" Said Ron, however Hermoine was looking at it, as though it was a bomb that was just about to explode.
"Harry I think you should put that down" She didn't get to finish the sentence. A blinding flash filled the air, anyone who was in the grounds at the time would see that The group had vanished.

Back to the present, I'm afraid

"Well how come we got transported back?" Asked Ron, curiously, although, by his face you could tell he wasn't expecting an answer.
"I dunno" Said Harry, honestly "Maybe something distracted Voldemort" Ron flinched, and Hermoine scowled at him.
The conversation went no further. The group stopped dead as a figure apperated right in front of them. It was the man himself, Lord Voldemort.
Ron and Hermoine gasped, but Harry, by reflex, without thinking what he was doing, whipped out his wand and shouted "STUPEFY!" however, the spell didn't work. Laughing, Voldemort held up his hand, and the spell rebounded, Harry had to duck as the red beam streaked by.
"You feeble fool, think you can match powers with Lord Voldemort?"
"Well, maybe" Harry tried to sound carefree, but it didn't work.
"I think he can if he has help" A voice came from behind Voldemort, Harry recognised the voice as Albus Dumbledores.
Albus Dumbledore, Sirius, Remus, Mr Weasley, and several other Wizards Harry didn't know walked around Voldemort to Harry, Harry himself was too shocked to speak.
"FOOLS!" Voldemort Shrieked. He pressed the black mark on his arm, instantly; his Deatheaters popped around him, like a shield.
"Of course" Harry said out loud.
"What Harry?" Asked Sirius blankly.
"Expecto Patronum" He swizzled round to face Voldemort "EXPECTO PATRONUM!!" He pointed his wand at Voldemort as he shrieked this. A giant, Silver stag Jumped out of his wand, it was the biggest harry had ever made. The Stag charged at Voldemort like a bull, as the Stag hit Voldemort he shrieked.
"ARGHHHHHHHHHHHHHHH!!!" He fell to the ground "Loyal servants. PLEASE!!" The deatheaters formed up, and at exactly the same moment, they cried.
"ADVA KAVARDA" Green light filled the whole grounds.
This was surely, Harry Thought, the end. The green light faded away, though. Harry got up from the floor, which he had been flung upon. He tasted blood in his mouth, but he washed that feeling away and looked at his Patronus.
It was amazing.
The stag had all the blinding light absorbed within it. It grew bigger and bigger as it sucked in the energy. It lowered its head once more, and charged, It went so fast Harry only saw a green streak, and of course he heard the piercing shrieks.
Silence filled the grounds, all was peaceful again, and the birds in the forbidden forest started chirping happily.
"Ha- Harry" Sirius stammered "Wha- What did you do?"
"What Harry did" Said Dumbledore smiling "Was defeat Lord Voldemort"