Whelp…here it is. My first attempt at a ZaGr fic. So... first things first. I do not own Invader Zim nor am I the creator of any of the characters other than an Original Character that will be introduced later in the series to which I will announce their appearance.

With that out of the way, here are the ages for the characters seen in the fic.

Main Characters

Dib- 18, Senior in High Skool

Gaz- 16 in chapters 1-7, 17 in chapters 8 and so on. Junior in High Skool

Zim- 18 Irk years old or 181 Earth years old (1 Irk year is equal to about 10 earth years)

My OC- 18

Others

Every other character (Excluding Professor Membrane and other adults) will be 17.

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Chapter 1: Where'd you go?

Earth…a pitiful planet in which the ecosystem dies a little with every step, breath and move a human makes. A planet in which the proud Invader Zim had been tasked in dominating. Zim had tried and failed no thanks to a particular earth-being by the name of Dib. This sole menace was set on exposing Zim to the world, so that he could prove all who called him insane wrong. Zim would often dwell in thought of the many battles in which they dueled in. Zims favorite was the water balloon battle. Seeing his opponent so stunned brought a slight smirk to his unwilling mouth. Then there was Gaz, a person whose name sent shivers down their spine if they so much as mumbled it without permission. Zim remembered the many times Gaz-human had helped him in his many conflicts with her annoyance of a brother. This was a repetitive cycle, until without a word the cycle had broken.

Dib and Gaz walked down the sidewalk on their way to skool. Dib was reading his newest copy of Mysterious Mysteries while Gaz was glued to her Game Slave slaying vampire piggies until Dib broke the silence.

"So uh Gaz? I know you're birthday is coming up in a few days and I was wondering what you might've wanted?"

Gaz paused her game as Dibs words crossed her mind in a loop. She would be 17 in 3 days. "I don't know, surprise me I guess?"

"You're not to fond of surprises. The last time I tried that I ended up with a broken nose" Dib chuckled at his past attempt at a surprise party. In which he hid in his sisters closet with the newest version of 'Vampire Piggy Slayer'.

Gaz smirked at the event as well " It was your fault for startling me. Maybe don't jump out of someone's closet saying surprise."

"Oh c'mon Gaz who else could've been in your closet?" Dib said with a smirk

"I mean, you kinda remind me of a sex offender I saw on the news th-"

"Gaz!" Dib said with a grin as he found it kind of funny.

Dib smiled while Gaz chuckled away. Rolling up his magazine he lightly hit Gaz on the top of her head. She made a note to punch him when they got home. They reached the front of the skool and walked up the stairs. Once inside they both went their separate ways, Gaz headed to her favorite class of the day, math. It had made its way onto her favorites list because of her being able to play her game slave the entire hour or leave the class whenever she wanted. Gaz already knew all of the material for the classes she had, she'd even been offered by the principal to move up a couple of grades. She declined the offer for whatever reason.

After walking into the class the teacher greeted them with a deep and depressed tone. "Welcome back everyone today we will be continuing our les-." Gaz drowned out the teacher and proceeded to pull out her game slave. The teacher rolled his eyes and continued to teach, ignoring Gaz's' actions. She spent most of the hour fighting off vampire piggies and would take short breaks in between. During one of them she decided to listen in on the lesson her teacher was discussing with the class. The teacher was going over the 'Pythagorean theorem' and was teaching with little enthusiasm as almost no one was paying attention.

After some time Gaz's eyes started to wander around in boredom. She noticed that once again, Zim's desk was empty. He'd been gone for almost six months. Despite being an alien and all Gaz somewhat enjoyed the Irkens company and he served as a buffer between her and Dib, lunch had pretty much become unbearable without Zim distracting her brother from engaging an unwanted conversation. In her eyes Zim was a very close friend, and though they barely talked the few conversations they did have were tasteful. With topics such as world domination, end of the human race and torture of those who opposed, Gaz found that she had much in common with the space kid. Dib of course, wasn't to keen with Gaz hanging out with Zim, but Gaz really didn't care. Never has and probably never will.

As the day progressed lunch came into play. Gaz sat in her usual spot and Dib setting down his lunch tray, sat next to her. Zim was still nowhere to be seen.

"What's up with you?" Dib questioned his confused looking sibling.

"Huh? Nothing…" Gaz looked at her brother wide eyed after she'd been gazing around the cafeteria. "just wanna get out of this hell-hole already." She growled as she lifted her elbow on the table as a head rest.

"Yeah, I do to." Dib said frowning only to smile and beam with enthusiasm immediately after "I wanna go home and watch the new premier of Mysteries Mysterious. Oh! That reminds me have I told you about the Swamp Goblin of Florida?"

Gaz rolled her eyes and thought 'Fuck me. Here we go again'. Her urge to get up and storm out of the front door without looking back was greater than ever, it wouldn't have been the first time either.

After 3 more hours of boredom, anger and curiosity eating away at her, skool came to an end and both Dib and Gaz began their journey home until Gaz stopped in her tracks.

"Gaz? You coming?" Dib said raising an eyebrow.

Gaz turned around and looked at the long stretch of sidewalk. Turning back to Dib. "Uh actually me and a friend were going to hang out for awhile."

"You have friends?" Dib said jokingly

Gaz growled in anger "I could ask you the same thing, weirdo"

Dibs smile faded "Don't be an ass, I was only joking, relax. Try not to stay out too late we don't need dad worrying about us."

"No promises" She said with a sarcastic voice. Dib turned and continued to walk home shaking his head while smiling. Gaz walked in the opposite direction making various turns until she found a familiar site. A small green colored house with purple tinted windows and a flag stating 'I Heart Earth'.

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I know this chapter is pretty short, and being honest, I kind of struggled with setting everything up. If this does happen to gain some popularity, please review and critique my work. (Don't be harsh or rude. I'm looking to improve my work)\

Just a note, other chapters will not be this short.