Disclaimer: Buffy belongs to Joss Whedon and Harry Potter belongs to J.K Rowling, how many times should I repeat it?

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Author's note: You may wonder why I put Dawn in Slytherin. Well, the reason is that almost every buffy crossover fan fic I read Dawn was put in Gryffindor. I just wanted this to be different.

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Dawn waked up that morning and took her uniform on. She stared down on her time table and she took out all of her equipment ready to learn.

The first class she had was history but unfortunately the teacher was a ghost and the lesson was just plain boring. She tried to do as well as she can in the class but she was new and magic was something she really doesn't know.

When she arrived at the potion class the teacher said

"You are late, 10 points from Slytherin"

She sulked as she sat next to Hermione.

For some reason Hermione seems to have every answer to the question Snape asked.

Then there was the time for the experiment.

"Dawn and Neville!" Snape said out loud.

Dawn quickly appproached her partner for the experiment.

"You will need a knife to cut out the rhinoi herb in half and then drop it in the mixture. Be careful to not cut yourself." Said Snape in his usual manners.

The first thing Dawn noticed was Neville was usually clumpsy and nervous but she said

"You hold the knife and cut the herb and I will hold it while you cut."

It was all going smoothly until Draco pushed Neville and Neville managed to cut Dawn by accident. The blood spilled down the floor and a portal was created. The students were all terrified when a small monster appeared.

It was small and grey with a terrifing appearance but suddenly it jumped out of the window.

Snape quickly performed a spell and the portal closed.

"Class dismissed and Miss Summers, I must meet you" He took a stern glance at her.

After the last person was gone and there was only he and Dawn in the room he said

"I never seen something like that happen in my whole life. The creature you just saw was a homunculus. It is usually present in other dimensions and they feed on human blood. It seems to me that when your blood touched the ground a portal was created. How did this happen?"

Dawn only stood there stupefied until she finally said

"I guess it just happened."

"Whatever the reason you and Draco must go to the forbidden forest tonight to find and capture it. I saw what happened."

When Dawn walked in the corridor people were whispering about the incident that happpened in the potion class and it was something to do with Dawn's blood.

'Great, like it can't get any worse' Dawn thought as she hurried to go to her final lesson.

It was Defence Against The Dark Arts and Buffy was teaching.

As soon as all the students were sat down buffy said

"My name is Professor Summers and I am your new DADA teacher" She said in a cheerful but also strict voice.

"Today we are going to look at vampires. There are many famous vampires. Can someone name me one of them?"

Dawn held her hand up.

Because no other students knew of any vampires Buffy pointed at Dawn

"There were four famous vampires and their names were Darla, Angelus, Drusilla and Spike a.k.a William the bloody because when he was human he used to write very awful poems. Angelus got a soul and Drusilla is very insane. Darla is dead." Explained Dawn

"That's good and 50 points for Slytherin" Said Buffy

Dawn leaned back on the chair smiling.

After the lesson was over Buffy had a private talk with Dawn

"I heard about what happened in the Potion Class. I don't know why your blood opened a portal in this school but I am sending a owl to Giles. For the meantime don't spill... blood." Buffy said in a serious tone.

Dawn then left the room and she actually felt a lot happier and confident than the first time she came. And she noticed that her Slytherin housemates were a lot nicer to her. It seemed it was going to be a nice day. Then she remembered she must go to the forbidden forest with Draco.