A while back, I wrote two interactive stories based around a body-manipulating space rock. It's a bizarre premise and perhaps an even stranger set of stories, but I quite liked it—if only for the opportunity to explore both generational changes and rapid stuff.

The paths:
http://www.cyoc.net/interactives/chapter_97398.html
http://www.cyoc.net/interactives/chapter_97399.html

Heck... Amy and Jess were actually the inspiration for fortesting-chan

Now, rather than turning either of these into a stand-alone pdf as I've been doing with my other cyoc stuff, I've decided to use the premise for a new one. Still a pdf, mind you, but unique in that I've not written this anywhere before.

Anyway... Here's my rough outline:

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It Came From Space (#3) -  Outline

Prologue
An advanced alien race sends ‘messengers’ into the cosmos. The targets are star systems that may develop life by the time they arrive. These messengers are organic devices programed to share information with intelligent (carbon-based) life. One of these messengers crash-lands on earth, fracturing it into several pieces.

Part 1
Sarah is one of the people who witness the event. While standing near the wreckage, she spots something shiny. Turns out, it’s a piece of the alien device; though she mistakes it for an unusual looking rock. She slips it into her pocket.

Back home, she places the strange rock on a shelf and sits down with Blake, her boyfriend. She asks if he thinks they’re alone in the universe. He jokes about being right there with her. After a short conversation, Blake heads to bed early (due to his job). Sarah flips on the TV and learns that the incident had been severely skewed by the news. Almost as though they were trying to covering it up.

Part 2
Government officials are busy transporting the rock to a nearby facility.  Jesse, a member of the recovery crew, accidentally makes direct contact with a fragment of the unusual meteorite, but doesn’t mention it to her superiors.

Part 3
Blake wakes early and leaves for work. The sound of his alarm wakes Sarah, but she falls back to sleep shortly after. A few hours later, her own alarm sounds. She begrudgingly gets out of bed and prepares for work. During a trip to the bathroom, she discovers an itchy spot in her cleavage. It seems benign and she assumes it’s just an inconvenient bug bite.

Things at work seem ordinary until her lunch break. During the break, she day-dreams about her boyfriend. Feeling mildly aroused, she casually reaches up to scratch the bite. It’s grown significantly and feels pleasant to touch. In a mild panic, she heads to the bathroom to check it out. It’s clearly a breast; something she won’t be able to hide if the swelling doesn’t stop soon. She convinces her boss that she’s feeling ill and leaves early.

Her body continues to change and the breast seems to grow faster as her libido spikes. Once home, she strips and begins to masterbate; too horny to care that she's not got three big sensitive boobs hanging from her chest. Following the session, she notices an unusual glow emanating from the shard from the crash site. Somehow, she knows it’s the reason her body changed.

Part 4
Back at the government facility, the alien device has been isolated. Something deemed necessary after a number of people experienced unusual physical changes. So far as they could tell, it was only affecting people who had made direct contact. Those workers were quarantined and the CDC was struggling to find the cause. They also needed to decide whether or not to declare a public state of emergency.

So far, there were been no reported civilian changes and the internal incidents hadn’t been life-threatening. In fact, some might claim that they were life-enhancing in the literal sense. The changes always involve reproductive organs and seemed to come with bouts of unexpected arousal. Jesse’s body was affected, but she managed to keep her change hidden to avoid being quarantined. She would rather seek answers than be confined to the facility.

Part 5
Sarah paces around the living room, trying to figure out how she’ll explain her new boob to Blake. The shard seems to pulse in response to her movements. She leans in to take a closer look and asks, “what are you…”

After a few rapid pulses, it echoes her words. She’s amazed that it can speak and tries to ask it questions. The shard spends some time repeating her words, but soon synthesizes enough of her speech to answer the first question. While she processes the information, Blake’s keys rattle just outside the door. Still naked, she snatches up the shard and runs into the bedroom just before the door opens

Blake comes in, surprised to see his girlfriend’s clothes on the floor. “Sarah?… You here?”

She replies, explaining that she came home early after claiming to be ill. He asks if she actually was ill from outside the door. She tells him no, but insists that he stay out. After some hesitation, she explains what happened. “You expect me to believe all that?” he asks as he pushes open the door.

Part 6
Instead of heading home, Jesse went back to the crash site. She wanted answers and knew that her superiors didn’t know anymore than she did. Perhaps there was a clue back where the alien device landed.

Part 7
Blake finds Sarah wrapped in a blanket on their bed. After some hesitation, she proves her words by showing the extra breast. Blake has no choice but to believe her story and picks up the shard before she can stop him.

He’s already quite turned on by the sight of her three breast and soon feels an itching his groin. His penis splits in two. The change is more rapid than Sarah’s. Most likely due to his already rising libido. He loves the new addition, but Sarah doesn’t share his enthusiasm, at least not until her own arousal begins to spike. Fun times ensue, but they eventually calm down enough to plan their next move. The shard claims that it can’t fix them unless it’s own body is restored.

Part 8
Sarah and Blake head back to the crash site, hoping for answers, but find that it’s been fenced off. They watch as some girl with a keycard enters the closed off area. She seems almost as disappointed as they are. The meteorite had been removed. Even the debris stirred up by the crash had been bagged up and hauled away. Sarah asked the shard in her pocket what they should do, but it offered no answer. They watched as the worker concluded her search and started back towards the gate. She seemed rushed.

Jesse’s detour was ultimately fruitless. Her team had taken everything they could find. Maybe she could sneak into the facility later that night to take a closer look at the pieces they recovered. As she sifted through the remains, her new addition squirmed in her pants. It was making her horny, so she decided to leave for home. On the way toward the gate, she spotted a couple standing just beyond the fence. They seemed distraught as she made her approach. Her intent was to tell them they needed to leave the area, but she never made it that far.

Sarah and Blake watch the girl slipped out of the enclosure, and start towards them. Given the look on her face, they guessed she would soon tell them to leave. But, before she was close enough to tell them off, she dropped to the ground, struggling with some snake-like thing jutting from her pants. They glanced at each other, as if to verify that they were both thinking the same thing. This girl had touched the messenger. And, if she had touched it, she would know where to find it.

Part 9
The girl continued to fondle herself until the snake-like-cock blasted out a surprising amount of cum. When finished, it was swallowed back into of her vagina. Following that, Sarah and Blake asked if she knew what happened to the rest of the meteorite. In a mild daze, she insists that it's classified, but decides to tell them when they show her the shard they found.

The shard joins the conversation; explaining that, without the communication module, the larger fragments may continue to change people in an attempt to communicate. If they bring the parts back together, it can repair itself and also fix them.

Given that, the three become determined to bring the pieces back together. Jesse insists that they give her the shard. Sarah refuses. She won’t give up the only thing that can fix her body. Blake won’t let her go without him, though he doesn’t mind keeping his extra dick. Jesse concedes and comes up with a plan to get the three of them into the facility.

Part 10
They stop at a fast food place to eat and plan their next move. Each of them offers up a proposal, but they ultimately go with Jesse’s idea to sneak in after nightfall. She keeps telling them that she should just go alone, but neither of them will have it. Without much choice Jesse explains that they’ll need disguises.

They stop by a nearby store to find some convincing lab coats, then head back to Sarah and Blake’s house to prepare. With some time to kill, they find themselves caught up in an unusual orgy. yay fan service.

The sun sets, they clean up and set off for the facility.

Part 11
Using the cover of darkness, they sneak past the security personnel out front. Jesse’s key card gets them through most of the locked doors. When her clearance level fails to get them any further, they must take a de-tour through the quarantined area. There, they see a number of modified people who have been forced to stay for an undetermined amount of time. Some are far less fortunate then they were. (insert interesting descriptions of changes)

Using the detour, Jesse leads them into the holding area and opens the door by shorting out the panel. The communication module glows as they approach the rest of the device. The recovered parts had already fused back together. The only thing left was the piece in Sarah’s pocket. Each chunk of the device was attract to the other, sending the larger portion toppling to the floor while Sarah’s piece was ripped from her pocket.

Part 12
The parts fuzed together and the device begins to hover and pulse. With it’s restored communication module and added knowledge of it’s three saviors, the messenger was able to show thanks by reversing the strange changes. While they lost their extra parts, it continues to read their genetic code, rapidly learning every facet of their composition. It came up with ways to improve them — ways that weren’t specifically to benefit their ability to reproduce.

Epilogue?
All disease, errors and weaknesses, rapidly scanned and corrected, but this was only the beginning. The device was restored, able to travel and share it’s knowledge with the local lifeforms. When it was finished fixing humanity, it would set off towards a new destination.

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Each of these parts will likely stretch into several pages, but this is my general idea.

Feedback is welcome.