Think of this as a slight AU. There is no pairings for this story. I know I always do have the typical pairings, but not this time. This might be a good story for some and an awful story for others. If you flame me, I'll feed you kitty chow. If you don't, you get plenty of cookies, and possibly some refreshments.

Zim doesn't know about, Dib having a sister since she did something selfless for her brother. I guess this is where you can consider it AU then. We know Dib is obsessed with the Paranormal so it is only natural for him to see if he can find his sister. Zim being Zim, does something that is completely him: Must find out what the Dib is doing. What could go wrong? :P

Dib had been haunted by a memory since he was 11. It was before Zim ever entered his life. It happened in front of this Hi Skool when he was curious about something so he dragged his sister with him. She didn't want to come, but feeling bored enough she agreed in hopes of something happening. She was probably expecting him injured resulting from chasing something. It was late at night when it all occurred. Dib didn't remember much except for a pair small hands at his back pushing him hard. When he came to, he found his sister in the middle of the street. Dib was shocked. She pushed him away. His sister is not known for being unselfish or being kind. She was the exact opposite, but it never stopped him from loving her. He hoped that one day for her to grow out of that phase of her life, but it seemed it wouldn't happen as he stared at her unmoving body when a scream ripped out of his body.

"GAZ!"

Dib remembered rushing over to her. Trying to get her to wake up. He tried so many things to do so even slapping her gently on her face. Calling 9-1-1 he informed them what happened.

That is when everything slowed down to a grinding halt to the point he vaguely remembered the funeral. He didn't remember standing inside the family mausoleum that already housed his mother and now his baby sister. Dib could only remember asking one question.

"What happened to her skull pendant?"

7 years later and in Hi Skool, you could say Dib was still haunted by that day. You could also say he was still obsessed with the Paranormal along with aliens, including the one in his classrooms. As they constantly fought one another on a daily basis to the point of being covered in bruises, Dib would end up coming home to an empty place wishing that his sister was there to make a deadpanned remark to him. Amazing how he missed those remarks of hers.

Grabbing a soda, he went to the couch to open the book he had been reading about making connections to other worlds, and how it could be achieved. In the many years he had been into the Paranormal, he had never ventured to this realm before. Flipping through some pages, he landed on a chapter that greatly interested him to the point of him reading it out loud. As he read it, he quieted down when he thought he heard a voice. Looking around, Dib continued reading before he heard the voice again.

"Are you just reading out loud to be annoying or are you that lonely?"

Dib could of swore it was Gaz's voice, but it sounded maturer. Though in essence she was actually, but the voice sounded it. For the hell of it, he replied, "I'm lonely."

There came no other voices, but Dib saw there was a list of what needed to be had in order to do the job. It also read that the place of death near or on it, would be the best chance to open the portal. Getting off the couch, Dib went upstairs knowing he has most of these supplies. It was time to have some things answered for his ever curious mind.

For Zim, he kept an eye on the Dib-stink sensing he was about to do something. He had been much too quiet for the past few days. Was he planning something against him and his base? He could never trust the filthy worm child. He had been trying to sneak into his base for years with only a few times succeeding. He'll follow him and he'll show that horrible hyooman never to mess with the all mighty Zim. NEVER!

Late Friday night, Dib snuck into the school deciding to go into the boiler room. Picking the lock was always too easy. Entering he had to scoff at how much it resembled a horror movie, but it was a perfect location for him. Walking over to the center of the area he was in, he drew a symbol in the middle of the floor with chalk. Placing several candles around in a circle, Dib lit them and began as he started to recite the incantation when he spotted that annoying green menace approach him.

"Go away, Zim. This has nothing to do with you." Dib's tone was angry.

Stepping into the circle with Dib, Zim narrowed his eyes at him. "If you are planning on destroying me then it is Zim's concern."

Baring his teeth, Dib almost pushed him, but held himself back. "This is a private moment that you will never understand. This has nothing to do with you and now you are in this circle I know you are too stubborn to leave. I'm correct aren't I?"

"You got that right hyooman." Crossing his arms over his chest, Zim grinned at him thinking he outsmarted his enemy.

Picking up the book, Dib started reading out the incantation loudly. As he continued reading, Zim's arms fell to the sides seeing a wind come from somewhere whipping around them. Panicked, he tried to leave the circle, but Dib's grip suddenly on his wrist kept him anchored there. Zim was officially binded with Dib to go to the other side together. Zim covered his face over with one arm yelling out in panic before instant blackness came over them both.

When they woke up, they found themselves in a dirty leaf covered hallway with lockers either torn off, painted over, or blood splatter on it. Zim and Dib looked around in question not loving the smell one bit, but what they hated worse was watching a small blonde teenager come out of a classroom with blood dripping off of her laughing away. Eyes getting wider just staring at the girl in front of them, the blonde turned her head towards them opening up her mouth so wide it covered the entire mass of her body.

"AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!" It was such a blood curdling scream, that Zim and Dib ran off in the other direction in a panic.

Ducking into a section of the hallway, Zim turned to Dib and slapped him hard across the face. "YOU! You brought me here. You take me back now!"

Glaring at him, Dib slapped him back. "I would if I could, but I have a mission to accomplish, and it is important we don't separate. OH and also... You followed me here ass!"

Turning around, they saw the blonde follow them deciding to scream again at them. Screaming themselves, they ran upstairs hoping for something better. As they were running up, Zim had to ask, "Why here of all places? Don't we get enough of skool at a normal time? You thought you make it more scarier, next time visit Miss Bitters!"

"If you have to know I'm looking for my sister."

"You have a sister? If we find her I hope she is kicks your ass after I kick it."

Dib won't comment to that question as they went to the second level going through the door. The place was just as dirty and disgusting as downstairs. Walking forth, they explored to find some room occupied with phantom classes in attendance, some ghosts were being tortured, and something that actually looked like Miss Bitters in one class teaching.

"Huh... Figures." Dib whispered, not even the least surprised there.

Shuddering at that horrid teacher, Zim followed alongside Dib as they continued down the hallway going around the bend to come across nothing but figures not even moving except to twitch. Gulping, Zim looked behind them to find the same creatures suddenly behind them. Tapping Dib's shoulder, he pointed them out. Dib had no clue what to do because each time they breathed they moved closer to them. He didn't like this. Feeling a tap on both their shoulders, they turned in surprise facing a girl who was 5' 3" wearing a black dress, pink/black tights, and long purple hair with a delicate face. For Zim, she appeared normal and clean for a place like this. For Dib, she was vaguely familiar, but she was older looking.

Pulling them both apart, she placed her finger in front of her lips to indicate for them to be quiet. Taking their hands, she walked them through the field of freaks who stopped twitching around. Reaching past the swinging door, she released their hands to turn around to face them. "It is important when you see them to have a guide because one touch from any of them, they will take your souls away, or at least pound you into meat." She instructed. "I'm the only guide you will have."

Dib was studying her all that time. "Gaz?"

Focusing on Dib, she nodded. "Yes."

"You were 10 when..."

"I know, and I wish I can explain why and how I aged in this crappy place, but I can't." Gaz told him. "I wish I could, but I can't."

"I've missed you." Taking a chance, he reached out to touch her face.

Allowing it, Gaz smirked. "In my old days I would of smacked you for touching me."

"I know, but I'm glad you are allowing this."

Feeling pain, Gaz stepped back. "I have to go Dib. I'm being called back by the master of this place. You'll see me again." Glancing over to Zim, she added, "Nice to meet you, Zim." Feeling claws on her, she turned abruptly to go through the wall.

"Eh?" Zim stepped back when she did this before grabbing Dib by the shirt. "Take us back through that head of yours now!"

"This isn't the Halloween thing, Zim! This is something different." Eyes moist, he walked over to the wall his sister disappeared through. "My sister is really here."

"Yes... And she seems already much more tolerable then yourself." Zim mused.

I might just update this once a week instead of daily like I normally have with my other stories.