Hello fellow readers! This is a story of Danny's twin sister. I'm sorry for those of you who think it's awful to go off the original storyline of the show, but I think it will be interesting. I hope you enjoy! Note: The story takes place a few months after Phantom Planet. Vlad is also alive, since the show never outright said if he died, even if that fact is highly probable. Danny's secret is only known to the 20 or so people that were around him when he revealed himself, (I'm sorry, but there was no sign in the show that that particular moment was televised) all of whom are trustworthy and will keep his secret. (Valerie was the only one from school who was there aside from Jazz, Tucker, and Sam) That also means that the government doesn't know who he really is.

Disclaimer: I don't own Danny Phantom. I only own the character and story of Danny's twin sister. Now, if you've had enough of my babbling, here's the story:

Chapter 1: An Encounter of White Shadows

Government official Joshua Kelburn walked to his car after a long day of uneventful work. He was tired, and after a whole day of trying to catch ghosts, he wanted to get home and relax for awhile. Now that he had taken in a foster-care daughter, he was sure that he would come home to a hot meal and a clean home. He hadn't wanted to take in the brat, but he could use the extra money that the state sent in every month. You'd think that being a government ghost hunter would entitle you to more pay. Josh grumbled to himself, nearing up to his vehicle. Suddenly, his ecto scanner went off, which was programmed to go off when any kind of ghostly activity was near. In an instant, Josh, or Agent J, as he was known as on duty, had whipped out a gun that was specially designed for ghost fighting. Agent J looked around the parking lot. There were only a few cars left in the parking lot, since he was the one who had been designated with lock up duty. Not seeing anything, Agent J put on his sunglasses, which were programmed to pick out the general area of where any kind of spectral activity was taking place.

"I know you're there, ghost. And by law, you are not allowed here unless you decide to be placed inside one of our labs," he said, finally locating where the specter was. And from the looks of it; it was a pretty powerful one. But that didn't concern the Guy in White. He was a professional.

"Oh, I don't know about that," said an elusive voice that seemed to be slightly familiar. Just as Agent J was about to pull the trigger, he felt the weapon pulled out of his hands. "What the-," Agent J then found himself restrained, by what seemed to be invisible ropes. He tried to struggle his way out of them, but they would not relent. Then he tried to call headquarters, (there was always someone there) but to his horror found that all his contact equipment was destroyed. Agent J looked up. Standing before him was the one ghost he thought he would never have to see again. "Plasmius," Agent J said, awestruck.

Plasmius smiled, showing off his fangs to the white clad agent. "And from what I can gather, you are Joshua Kelburn, also known as Agent J, Guy in White," The ghost with the light blue skin, red eyes, white suit, and cape said smugly. Agent J tried to struggle loose. "Oh, I wouldn't do that if I were you," Plasmius said with a wave of his hand. "I'm here to offer you a bit of a business opportunity," he said, grinning maliciously.

"What could you possibly have that I want?" Agent J asked the fiend.

"What about the ghost you have been trying to capture since he saved the world? Danny Phantom?" said Plasmius, asking the question with the air of knowing he was right.

At this, Josh froze. He could get him the ghost-boy? "How do you even expect to get close to him?" he asked.

"Well, it wouldn't be that hard if he had someone to find him for you, now would it?" Plasmius stated. Josh's confusion must have been evident on his face, so the floating specter continued, "I know how to make a half human hybrid. Half human, half ghost."

"Like you?" Josh asked accusingly. The statement did not seem to bother the being the accusation was meant for.

"Yes, like me. The only thing I-we, would need is a person that we could dispose of when we finish."Plasmius said.

Josh thought for a moment. On the on hand, he could bait the ghost-boy and then he and his fellow colleagues could figure out what he was and why he continued to make his permanent home the town a few miles over, Amity Park. But, on the other hand, this was Vlad Plasmius, the ghost who had basically held the world for ransom a couple of months ago. "Why should I believe you?" he asked hestitently.

"Because I know how much you want to have revenge on the ghost-boy." Plasmius said evilly. "He saved the world, and he's such an important figure to the world now that no one wants anyone to hunt him. But we both know that one ghost staying in one spot means that they are a menace. Saving the world or not, you need to find out all you can about the boy so you can keep the agency afloat, as you were the one who brought it down in the first place. Now no one wants to fund you, and the only way you can be the esteemed ghost hunter you desire to be, is to catch that pathetic excuse for a hero."

At this, Agent J felt himself grow rigged as he felt the specter's words wash over him. It was all true. At this realization, a hot wave of anger rolled through his muscular, but bulky, figure. "Alright." He told the floating half-ghost, half-human. At once, the invisible ropes that had been binding him vanished.

"Now," Vlad said, rubbing his hands together. "Where are we to find a person that we can use to bait the ghost-boy?"

"I think I might have a good idea," Agent J said, pulling a picture out of his pocket that showed a sixteen-year-old girl. The photo was part of the documents he had received for his foster daughter. On the back of the picture was her name. The girl had given herself he last name, simply saying that it sounded right to her. Said that it 'might be her birth parents' name'. The girl was crazy. Her file had said that she had been part of a set of twins, but her parents had picked the boy over her. She had arrived at an orphanage near the hospital a few hours after birth, moving from foster parent to foster parent, never lasting more than a year. How she thought the last name she had picked out was anything close to what it was for the first few hours of her life, Agent J (or 'Josh' as she called him. He hated that. He preferred Agent J) didn't know. But that was her problem.

On the back of the photo was the name Deliah Preston.

Thanks for reading! This is my first fic, so let me know what you think... I want to know if anyone's actually reading. If people are reading, (like you are right now ^^) then I'll be much more motivated to get the next chapter up.

And for those of who didn't figure it out, (I hope this statement makes you say 'Duh!,' but if not, that's why I'm putting this up) Deliah's twin brother IS Danny. And NO, Danny's parents didn't choose him over her. You'll find out more within the next few installments.