THE CHALLENGE Basically due to low birthrates, the high number of squib births, and general inbreeding in the Purebloods the Ministry enacts a law requiring all Muggleborns and half-blood to marry a pure blood.

Can be set during the War or post war.
They have to have sex to seal the marriage.
Children are required by law but the author can decide whether to get Hermione pregnant or not.
Manufacture whatever reason Hermione can't marry Ron.
Dumbledore is behind the marriage.
-
PART TWO - Wedding -
Hermione trudged back to the Gryffendor Common Room, to tell her friends of what had become of her life. She ran a hand absently through her hair, as she told the Fat Lady the password. The portrait swung open, a worried look on the Fat Lady's face, though she didn't say anything. The portrait could ask another to find out faster, she was sure. Hermione entered the Common Room, and quickly spotted her friends, who were in a fast conversation. They both stopped as she approached, nodding to her to sit down. "Who is it?" Ron asked quickly, already knowing that she would be engaged by now.
"You aren't going to like it.." She offered, giving them a chance at getting out blissfully ignorant for now. But when they both shook there heads she sighed "Malfoy" The word came out like a curse, and both gasped as if it had been so. None of them had ever gotten on with Malfoy! There was no way they'd start soon, and now poor Hermione would have to marry the git! "Isn't there someone else?" Harry pushed, a frown and a look of worry crossing his face. "I almost had a choice between Malfoy and Crabbe.. But miraculously Crabbes name was scratched out." She answered, leaning back in the chair she'd selected earlier. "There aren't any other coming of age birthdays, either, and Malfoy is running out of time to marry as well"
"I'm so sorry..." Harry started, worry still across his features. "I'm considered a Half Blood, or I'd help.. You know that, right?" Hermione smiled reasuringly, or so she hoped, before standing up, with a theatric yawn. "I'm going to take a nap.." "But it's only one in the afternoon.. we could sneak to Hogsmeade..." Ron offered, silently, but was put down as she shook her head. "I need to think alone, sorry Ron.." She tried to smile, and after failing miserably started slowly for the stairs to the girls dorms.
-
ONE WEEK LATER... Saturday though Hermione was in Hogsmeade, thanks to a special invitation by Dumbledore, to pick out a dress for the ceremony that would be taking place the next day. She was NOT looking forward to the next week! She was expected to 'consumate' the marriage... She sighed heavily, as she pointed out a gown that looked nice, and the woman helping her bustled over, taking it down and helping her on with it.
It was a lovely gown, and she wouldn't have to pay for it. It seemed to melt into her skin, covering her upper body nicely, the fabric 'melting' from white to skin colored as it traveled up above her bust, and her skin was shown at her collar bone. The skirt of the gown fell down loosely, after it tied below her bust with a nice white bow and the tail of the bow reaching down near the hem of the skirt, which touch the ground. The sleeves were unattached, and had the same effect as the top, melting from skin to white to skin at the hands in a triagle. She decided that dress would do, and started on shoes, which were picked quickly, and wouldn't be seen anyway. Then she made an appointment for someone to come do her hair, and discussed possible styles, picking one with her hair mostly down, but with extravigant curls. She may not be happy with the arrangement, but intended to look good at her own wedding.
Once she'd finished she headed back the the castle, everything would be delivered first thing the next day, and she'd be ready on time.
-
When she arrived back at the school there was an owl waiting in the common room for her. It had a message from Dumbledore, which she opened hastily, hoping it was another boy she could marry. She was disappointed to find that wasn't so.
-Miss Granger,
Last day we will know you as such, sorry to say.
Here are directions to where you will sleep for tonight, for privacy, so you can get up early and have the stylist to yourself-
She flipped over the paper, and the instructions were there.. Along with the password, which made her cringe. It was really happening!
She said good night, collecting some of her things from her room, shampoos and such, and left the common room on a sad note.
She navigated the corridors, finding the appropriet portrait, a beautiful one of a woman, near her own age, in a lovely gown, awaiting the day she would be married in anxiety. When she gave the password 'I do' the woman smiled kindly, and chattered a moment about her own wedding and asking questions. Hermione finally got into the room, after telling her all the details. That it was arranged. Whether it was in or outside. What her dress looked like. Everything.
She saw the bed, and smiled at the sight. Exhausted she set her things on a chair and fell onto the bed, falling asleep almost imediately.
-
She heard the annoying 'tick tick tick' of something tapping on the glass of the window, and turned over to look out. She saw a rather large owl, carrying a rather large package, and it quickly registered it was for her. Getting out of bed, she headed for the window and threw it open, that owl, as well as another with a smaller build and package, flew in to drop the items on her bed. She thanked them both, as they flew out of the window, and she went to take a shower. She'd promised to have her hair washed and ready when the woman arrived. She then went over and put on her dress, magickally, using instructions the woman in the shop had given her. She had just finished when a knock came to her door.
Hurrying over, Hermione threw open the portrait door from the inside, to see the lady that was to do her hair. With a warm smile, and a flick of her wand, the attached bathroom was turned into a sort of mini salon. Hermione was movtioned to sit in the chair, and robe looking thing was draped over her dress as the woman began her work.
-
JUST BEFORE DAWN It had been Draco's idea to make it so early. Now he was regretting it. He was so tired, and it was against every fiber in his body to be doing this. He was marrying the Mudblood Granger, of all people! She better not be expecting him to be at all lenient on her friends because of this. Then the music started up, her Maid of Honor, Ginerva Weasley, and his Best Man, after long consideration, and much fighting between Crabbe and Goyle, Blaise Zabini.. Ginny didn't look to pleased about it. Others came down the isle, then the music changed. Faeries began sprinkling flower petals down the isle, as Hermione Granger exited the little tent she'd been hiding in.
Draco had to do a double take at the creature coming down the isle towards him. She could look like that! He was in shock! Sure, she'd looked decent at the yule Ball in fourth year.. but this was an incredible difference between now and then, and for a moment he almost felt glad at the pairing.
That moment ended quickly though, and he turned toward the priest, not waiting for her to reach him.
Hermione did eventually reach her betrothed and the priest, ignoring the way Draco was acting, and just wanting this to be over. Not like she had a choice in the matter.
The priest said all the things a priest had to say, then asked them to do their vows. Both repeated what he said, and said "I do" at the appropriet times, though both with alot of hesitation. Then came the moment of the kiss. Everyone sat in suspension as the two looked at each other, daring the other to make the first move. Neither wanted to do this, from the looks of it, but they had to for the ceremony to end.
After what seemed hours Hermione felt a pair of soft lips brush her own, barely, but enough for the crowd, and it pulled away just as quickly. She just knew she'd imagined the flutter in her stomache at the feeling of her 'husbands' kiss.
-
END PART TWO Thank you all for your reviews! I love hearing what people have to say, some more than others, though did not appreciate the long flame. I'd really prefer it if you don't have anything constructive to say, that you just keep it to yourself.
I'm thinking one more part to this story, MAYBE two...