I think this might be a rubbish chapter but I hope you like it.
Disclaimer: Sadly I don't own Harry Potter, it's all JK Rowling's work.

It was early morning when the staff, who were still in their pyjamas (Harry and Draco had thrown some joggers on but no top), commanded all pupils to stay in their dorm rooms, the staff went to investigate what the loud sound that had awoken them was. Someone was breaking the wards.

"Filius how long until the wards are broken?" Harry asked

"We have at the very least half an hour and the very most an hour." He replied seriously

"Minerva, the students need to be hidden or removed from the premises."

"Where can they go? No doubt the attackers took out Hogsmeade."

"The Chamber of Secrets. It's clean and there is a powerful protection spell, it's far enough underground that they won't be affected by any destruction. I have made the main chamber into a common room in a way, I can have food put down there for them. Have the house elves down there with them if anything happens to me the elves can get the students out of the chamber as only I can speak Parseltongue" Harry explained

"Harry, you lost your Parseltongue ability." Draco said

"I haven't used the ability since Voldemort died." Harry said before hissing in Parseltongue

"See I still got it."

"Round up the students and take them to the first floors girls lavatory. Send them in in year groups. Don't cause a panic otherwise I'd be more difficult."
"The eighth and seventh years can help fight and defend but I would appreciate some older years to stay down with the younger ones." Minerva said before having four members of staff collect the students from each house as Harry dragged Draco with him to the lavatory.

"Open" Harry hissed in Parseltongue, the floor began to shift and Harry said something else and a staircase appeared instead of the drop.

After all the pupils minus the members of the DA and several others who offered their help, Harry closed the entrance (a few staff members had gone down to help look after everyone.

Those who were fighting estimated they had about 20 minutes until the wards would collapse, everyone heard a pop and saw the Minister, some Auror's, the remaining Weasley's and everyone else who had been apart of the Order and was still alive standing behind them with what looked like a portkey.

"Minister who are they?" Narcissa asked

"They are the remaining Death Eaters, we had a break out in Azkaban-"

"Again!" Harry yelled angrily as he interrupted

"Yes, but it seems to have been an inside job, you see yesterday some of the Auror's were sent to Azkaban because we hadn't heard anything from them for a couple of days and when they got there the prison had been destroyed, bodies of the guards were found along with a few prisoners but all the Death Eaters had gone. I believe that one of the guards had left the cells unlocked and either killed or knocked out the other guards whilst the prisoners escaped." Shacklebolt sighed before continuing "Harry there's a man who has power that rivals Dumbledore's, I believe he has led this attack"

"Let me guess you want me to kill him." Harry said with a sigh.

"He goes by the name of Lord Slytherin even though he has no relation to Salazar Slytherin, he was a Ravenclaw when he went to school here."

"His actual name?"

"Euan Prince."

"How is he related to Eileen Prince?"

"They were sibling's. Euan was presumed dead a few years before Eileen died. Why?"
"Because this Euan would've been Severus Snape's uncle."

There was a shattering sound, the wards had fallen, those fighting had locked the castle entrance and were standing in the courtyard guarding it.

The man who appeared before them had light brown hair and dark eyes, he stood in front of the group of Death Eaters,

"I am Lord Slytherin and I command you to hand the Potter boy over and no blood will have to be shed."

"Never." Everyone else shouted, and the fight broke out, Harry charged straight towards Euan who had noticed and smirked.

"What do you want with me?" Harry yelled as they pointed their wands at one another

"I want you dead or I might keep you as a prisoner maybe a servant of some sort" The man said

Spells were shot at one another when an explosion happened in between Harry and Euan sending them both flying across the courtyard. Harry saw a green curse headed for Daphne Greengrass who was next to him, he dived at the blonde and pushed her to the ground as the curse went over head he smiled gently before charging back into the fight.

"Draco!" Harry shouted as he saw his blond lover fly into a wall, whilst Harry's attention was diverted someone shot the killing curse at him, Harry only realised it when someone dived on top of him pushing him into the ground.

"You idiot! Don't turn your back." Said a voice that Harry hadn't heard since 1993.

"Flint?" Harry said confused, the older boy helped him up and went back to shooting spells at people.

"Euan Prince. Let's get it over with." Harry yelled as he spotted the man who had caused this mess

"Avada Kedavra" the spell was shot at each other at the same time, Harry had managed to fall to the ground as the green curse shot over his head however the curse Harry sent hit the target the man fell to the ground.

Everyone who had been helping Euan Prince was either dead or bound and unconscious.

"Minister. They will escape again." Is all Harry said as he looked for his lover who was being treated to by Marcus Flint,

"I thought you were a Death Eater?"

"I wasn't, but I left the country to start a new life, I overheard someone say something about attacking here and I wanted to return and help, so I did."

"Thank you." Harry said before kissing Draco's forehead and looking for his mother

"Narcissa, your son is fine he's over there." Harry said before going over to Minerva

"Please tell me we have no casualties" He said hopeful

"We don't. There doesn't seem to be much damage here either." She said with a gentle smile.

Everyone who attacked Hogwarts were all executed, the students and school was back to normal and everyone was full of gossip and talk for weeks. Summer came then went, eighth and seventh years leaving as new first years came. Hermione and Ron got jobs at the Ministry and Neville worked at school he was Pomona Sprout's Herbology assistant. Harry smiled as he thought about Draco, it had been there one year anniversary a few days ago, as he walked through the Great Hall for tea, not knowing what was about to take place.

I'm pretty sure Harry loses his Parseltongue ability but I needed him to have it so yeah he doesn't lose it. Euan Prince is a made up character he doesn't exist in the Harry Potter world. There's only going to be one or two more chapters sorry.