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Introduction:

As the Robinsons investigate a strange energy reading, a sinister foe lurks in the shadows.
John sipped his morning coffee. He surveyed the living quarters, and the sleeping family that lay there. Maurine slept, draped across Don, his cum dripping from her ass onto his lap. God, he envied Don and Will. None of the women would let his dick anywhere near their asses.

Will dozed between his sisters, his hands resting on their warm cunts while they snore the morning away.

His thick fingers tapped away at the monitor in front of him. Don had assured him the long range scanners were working, but he had his doubts. There was no way this energy signature could be right. Could it?

******************

Will woke to find Penny straddling him. "Wake up, little brother," she happily called out as his eyes opened. "I have good news!"

Will looked at his naked sister sitting on his thighs with her hands gripping his hard cock. "Wh- what's the news?"

She bounced as she talked, her bare breasts juggled enticingly. "Mom, dad, Don, and Judy left to go check out something they found, and left me and you behind to clean up all of the stuff that got scattered in the crash."

Will was skeptical. "They are off exploring while we get boring clean-up duty? How is that good news?"

Penny leaned in close and whispered in his ear. "It's good news because they left Robot, and I told him to do it. That means we get whole morning, just me and you. It's been months since I've had this cock all to myself."

Will smiled as Penny lifted up and guided his cock into her pussy for what would be the first of many times that day.

*****************

While Judy drove the Chariot, she glanced back at the passenger seats. John sat with Maurine straddling him, his enormous member stretching her pussy to the limit. He sucked at her nipples as they bounced in his face.

Don put his hand on her back and she paused for a moment. He lined his hard pole up with her puckered asshole and began to slowly push.

Maurine let out a long sigh as the two rods began their rhythmic pistoning inside of her holes. She wished Will had been able to tag along so she had a cock to suck as well, but Penny would have thrown a fit.

The men kept their own pace, but occasionally the timing lined up and they both pushed inside of her at the same time, and when that happened she could feel her heart trying to escape through her chest.

"God damn, Maurine. Your ass is so tight. I want to cum in you so hard you can taste it." Don told her from behind.

"Fuck me, boys. Fuck me hard." Maurine called out. She closed her eyes as the men pounded her cunt and ass roughly. She felt lost in the moment when her hair was yanked forward, driving her face into the bare cunt of Judy, who had perched on the back of the bench.

Judy kept her pressed there until her tongue began probing her daughter's folds. While she had never done so before, she found that her first taste of pussy was quite pleasant. Judy relaxed her grip on her mom's hair. John took her and placed her between himself and his wife, and while Maurine licked away at her pussy, John's tongue found her ass.

Judy and Maurine both reveled in the total assault their bodies were under. Their bodies throbbed in ecstasy as they were licked and fucked.

Soon the first orgasm broke, which triggered the next, until all four bodies collapsed. Maurine was in the center of the pile, giggling uncontrollably.

"What's so funny, mom?"

"Don said he was going to cum so hard in my ass I could taste it. Well, I certainly tasted it, along with John, and Will!" She picked up a bit of spunk from her daughter's thigh and popped it in her mouth. "I don't know whose that was, but it was delicious."

*****************

After collecting themselves, John asked Judy, "How much further to the signal?"

"Oh, we arrived ten minutes ago." She replied matter-of-factly.

"Why didn't you say something?"

"And miss out on getting my pussy licked by mom? No way. I've always wanted to try it."

Maurine chuckled. "She's got a point. It was my first time, but it definitely won't be the last." She cast a look at her daughter, seeing her in a new, and sexier, light.

Outside, they found the source of the signal, another crashed ship. It bore striking similarities to a Jupiter, but somehow more advanced.

They split up to search the ship, and saw no signs of the crew. Don headed to the engines, Maurine to the bridge, and Jon and Judy looked for supplies.

"Hey, everyone," Maurine called out. "Get to the bridge."

As they filed in, Maurine continued. "So this ship should be compatible with our Jupiter. So if its engines are intact, we can salvage them. But, it requires a different fuel type, so we will have to get some. Luckily the previous crew had set the scanners to search for the fuel, Derivium, before they…"

She paused to look around the derelict ship. "Before they disappeared."

"How is this possible, Maurine? The Jupiters are the most advanced technology humans have produced. How is this wreck compatible?" Don asked.

"They are," she confirmed. "But according to the logs, this ship won't be built for another fifty years. We've got to get off of this planet."

*****************

Penny's face and tits pressed against the cold window. She stood on tip-toes, her hips rolled to put her butt high in the air. She loved every second of it, as her brother crushed her against the inner wall of the kitchen, pumping his cock hard into her dripping pussy.

She had four loads of Will's cum in her already, when he said he was going to go help Robot clean up. Thinking quickly she taunted him. "What's the matter, little brother? Can't keep up with your big sister? If you can't get it up again, I can always-"

She squealed and ran as she was cut short. Will gave chase and cornered her in the kitchen, which is how she got herself in this position.

"How is this for your little brother?" He asked, each thrust lifting her feet off the floor. She felt like she was floating as his cock rammed into her. She was going to miss the lower gravity, so she wanted to get as much low G fucking in she could.

She felt her well fucked pussy stretching with each driving thrust, and she could only mutter her gibberish response into the window. "Speechless? Makes sense that you only shut up when you've got a cock in you."

She nodded dumbly as her hands pulled her ass up higher. Will pushed hard and she screamed as he penetrated her cervix. The sudden shock caused her legs to give out completely. Only the force of Will pinning her to the wall kept her from crashing to the floor.

Will kept fucking hard into her ragdoll body as she drooled on the window. He pushed hard while pulling her to him, spewing his incestuous cum and coating her open womb with his spunk.

*******************

"Okay, so this ship is somehow from the future?" Don asked for what seemed like the hundredth time.

"It would seem that the rifts in space had an effect on the timeline of this ship, or ours, or both." Maurine explained again. "That's not important. What is important is that these engines will fit our ship. We just need to find a source of Derivium, the primary fuel for these engines."

Everyone got to work dismantling the engines while Maurine scanned the nearby terrain for traces of Derivium.

*********************

Penny was in heaven. She had told her brother to fuck her silly, and he had dedicated the entire day to doing just that.

She lay sprawled on the dining table, her legs dangling limply. She could barely muster the energy to moan, while the relentless Will continued fucking her.

She had so much of her little brother's spunk inside of her that it dripped out around his cock and onto the floor. Still, she could tell that he was building up to another thick coat of creamy cum for her sopping pussy.

She felt her pussy stretching wide to take her brother's load as he pushed deep into her. She could barely enjoy the sensation as sleep overcame her mind. As she drifted off, she heard a familiar voice.

"Hey, Will. Does this rag smell like chloroform to you?"
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