Hey guys!
I really want to keep working on this story; but planning it is taking too much time. I have no plan for whare the plot can go after this, and I don't have an ending in mind either!I mostly wanted to share my idea about how Dudley could have been a wizard. I had an idea for chapter four though, here's what I came up with:

Chapter 4
The Plot

Wishing more than ever that it was a cloak of invisibility, Neville put up his hood and began his escape. He could hear Draco's voice echoing instructions from the hall behind the door. Neville had only one chance, he could not let either Draco or Dudley see him. Carefully opening the door, while trying to prevent a creak; Longbottom slid into the hall.

Pressing his back against the door he analyzed the room, what would be the best route out? Potted trees lined the walls creating shadows, if he ran between these trees and the wall he's have a good chance at being undetected. Plants had always been on his side.
He sprang from the wall and ran, Draco and Dudley were so wrapped up in their magic that they had not seen him yet. When Neville got out, he'd contact the agency and they'd bust the plant from Dudley's possession. Neville could not carry it out with him without being zapped. "Crucio". A burning pain shot through Neville's body, brining him to the ground.

"Now that, Dursley was a perfect example of the cruciatus curse" Draco boated. After wincing at Neville’s pain, he turned on his heal to face back to Dudley. "Every successful wizard must master the three unforgivable curses. There will be wizards who want to go up against you, and you need to be prepared. Now, recruit wizards for your army. Your going to need it" Draco mentored.

Dudley stashed his wand in his holster. The villainous trio had found a wand for him on a cart in Knockturn Ally, nine inch hornbeam with a unicorn hair strand; surprisingly rigid. The wand had an instant attraction to him. "How do you expect me to memorize all these spells, I can barely pronounce them!" Dudley protested.
"Filthy muggle" said Draco "Don't make me test the third curse on you". The idea of having an army thrilled Dudley; but actually doing the work was where he flopped. Dudley raised his hands as if clueless and left the room.

Draco turned back to Neville who had regained his footing "Thinking of leaving Longbottom? Well remember, the potion is not complete". Neville had been helping Draco concoct a potion with the plants leaves. Only Neville knew how to make it, and Draco would not let him leave until it was finished. "When will the potion be ready?"Draco asked. Neville replied without the slightest tremor in his voice "By then next full moon". Draco glanced out the window "which is, in three days as it looks" he said, gesturing to the almost full moon outside. Once someone drank the potion, all the power of the plant would then be theirs. What Neville didn't know was that Draco was planing to re-establish the pure-blood rein, and frame Dudley as being the culprit.