Basically, Dumbledore explaining the Triwizard Tournament

"So!" said Dumbledore, smiling around at them all. "Now that we are all fed and watered-"

"Hmph!" said Hermione while Arth sadly looked upon the untouched turkey legs on his plate.

"-I must once more ask for your attention, while I give out a few notices. Mr. Filch, the caretaker, has asked me to tell you that the list of objects forbidden inside the castle has this year been extended to include Screaming Yo-yos, Fanged Frisbees, and Ever-Bashing Boomerangs. The full list comprises some four hundred and thirty- seven items, I believe, and can be viewed in Mr. Filch's office, if anybody would like to check it."

The corners of Dumbledore's mouth twitched.

He continued, "As ever, I would like to remind you all that the forest on the grounds is out-of-bounds to students, as is the village of Hogsmeade to all below third year. It is also my painful duty to inform you that the Inter-House Quidditch Cup will not take place this year. This is due to an event that will be starting in October, and continuing throughout the school year, taking up much of the teachers' time and energy — but I am sure you will all enjoy it immensely. I have great pleasure in announcing that this year at Hogwarts —"

But at that moment, there was a deafening rumble of thunder and the doors of the Great Hall banged open.

A man stood in the doorway, leaning upon a long staff, shrouded in a black traveling cloak. Every head in the Great Hall swiveled toward the stranger, suddenly brightly illuminated by a fork of lightning that flashed across the ceiling. He lowered his hood, shook out a long mane of grizzled, dark gray hair, then began to walk up toward the teachers' table.

It looked as though it had been carved out of weathered wood by someone who had only the vaguest idea of what human faces are supposed to look like, and was none too skilled with a chisel. Every inch of skin seemed to be scarred. The mouth looked like a diagonal gash, and a large chunk of the nose was missing. But it was the man's eyes that caught the eye the most.

One of them was small, dark, and beady. The other was large, round as a coin, and a vivid, electric blue. The blue eye was moving ceaselessly, without blinking, and was rolling up, down, and from side to side, quite independently of the normal eye — and then it rolled right over, pointing into the back of the man's head, so that all they could see was whiteness.

Arth recognized him at once.

"It's Mad-Eye Moody!"

"What!" Said Ron with a look of awe plastered on his face. "The Mad Eye Moody?"

"Who is Moody?"

""We'll Tell you Later Harry."" Said Ron and Arthur at the same time before turning back towards Moody.

Dumbledore cleared his throat.

"As I was saying," he said, smiling at the sea of students before him, "we are to have the honor of hosting a very exciting event over the coming months, an event that has not been held for over a century. It is my very great pleasure to inform you that the Triwizard Tournament will be taking place at Hogwarts this year."

"You're JOKING!" said Fred Weasley loudly.

Nearly everyone laughed, and Dumbledore chuckled appreciatively.

"I am not joking, Mr. Weasley," he said, "though now that you mention it, I did hear an excellent one over the summer about a troll, a hag, and a leprechaun who all go into a bar . . ."

Professor McGonagall cleared her throat loudly.

"Er — but maybe this is not the time . . . no . . ." said Dumbledore, "where was I? Ah yes, the Triwizard Tournament . . . well, some of you will not know what this tournament involves, so I hope those who do know will forgive me for giving a short explanation, and allow their attention to wander freely. The Triwizard Tournament was first established some seven hundred years ago as a friendly competition between the three largest European schools of wizardry: Hogwarts, Beauxbatons, and Durmstrang. A champion was selected to represent each school, and the three champions competed in three magical tasks. The schools took it in turns to host the tournament once every five years, and it was generally agreed to be a most excellent way of establishing ties between young witches and wizards of different nationalities — until, that is, the death toll mounted so high that the tournament was discontinued. There have been several attempts over the centuries to reinstate the tournament," Dumbledore continued, "none of which has been very successful. However, our own departments of International Magical Cooperation and Magical Games and Sports have decided the time is ripe for another attempt. We have worked hard over the summer to ensure that this time, no champion will find himself or herself in mortal danger. The heads of Beauxbatons and Durmstrang will be arriving with their short-listed contenders in October, and the selection of the three champions will take place at Halloween. An impartial judge will decide which students are most worthy to compete for the Triwizard Cup, the glory of their school, and a thousand Galleons personal prize money."

"I'm going for it!" Fred Weasley hissed down the table, his face lit with enthusiasm at the prospect of such glory and riches. He was not the only person who seemed to be visualizing himself as the Hogwarts champion.

"Eager though I know all of you will be to bring the Triwizard Cup to Hogwarts," he said, "the heads of the participating schools, along with the Ministry of Magic, have agreed to impose an age restriction on contenders this year. Only students who are of age — that is to say, seventeen years or older — will be allowed to put forward their names for consideration. This" — Dumbledore raised his voice slightly, for several people had made noises of outrage at these words, and the Weasley twins were suddenly looking furious — "is a measure we feel is necessary, given that the tournament tasks will still be difficult and dangerous, whatever precautions we take, and it is highly unlikely that students below sixth and seventh year will be able to cope with them. I will personally be ensuring that no underage student hoodwinks our impartial judge into making them Hogwarts champion." His light blue eyes twinkled as they flickered over Fred's and George's mutinous faces. "I therefore beg you not to waste your time submitting yourself if you are under seventeen."