It was a nightmarish night that started funnily enough, with the afternoon 1 task of the tri-wizard task. The 1 task, for those who don't remember was to out think a nesting dragonet. The 4 champions accomplished the task with more or less success, each successfully obtaining the clue for the second task. With point awarded each champions left to celebrate with their schools.
But after dinner the champions, who by coincidence decided to leave around the same time, thought as they are in the same death defying tournament, they should party partway together. With that decided; they went and invited the rest of their school to party in the forbidden forest by the black lake. To contain the party a little, the Hogwarts champions invited only the 13 and older, leaving the 1 & 2 years to go to their bed.
The party was a rousing success, the eldest Weasley who were still in Hogmead was somehow smuggled to the party. Bill living in Egypt suggested that the champions celebrate their victory over the dragons by having a magical tattoo of said dragon. The champions all into their cup by this point accepted gladly. As Harry technically defeated two animals, he got two. To silence the septic, Harry led the whole party to the chamber of secret. With the help of Ginny and Bill they found the likely forest entrance, and everyone got to see the mighty of the serpent in its defeated state. Charlie, remarked that basilisk would fetch pretty money, so they got scavenging the used part. They left and got back into the party, when then got back, it's when everything went pear shaped.
While they were away some of the younger students jealous of Harry success, and more than a little tipsy decided to antagonize the dragons. After one too many rock throw at him, the horntail got free of her chain and went after the children's. Now in normal circumstances, a dragon would be quickly subsided by a group of powerful wizards. But this was not normal circumstances, one the horntail already pissed with the task in the afternoon became enraged thus less likely to heel when the dragon handlers started firing spell to subdue it. Two, the other three dragons seeing the horntail got free, they too broke their chains, and egged by the horntail were as enraged. Three the handlers there were the graveyard shift. The other's like Charlie had the night off and were not on site. Thus the dragons easily overpowered the handler.
The stupid's children finally seeing what king of danger they wrought on themselves run toward the lake, they didn't make it. The largest group that went with the champion happen to the clearing, just to witness this nightmarish vision. They started running, the younger children toward the lake, the oldest with Charlie to try and subdue the Dragon, and save the eggs (Charlie). Realizing that their spell was only antagonizing the dragons they broke away the rejoins the children. With the forest in flame, and the dragons bearing toward them Bill & Percy try to make a portkeys. After transfiguring a rope long enough for all to grab on just as they were finishing the spell to activated it all of the dragons let lose fire on them. They port away just as the fire were reaching them.