The two foxes had been walking for most of the morning and past noon by the time they reached the entrance to an old cave in the forests of a mostly tropical planet. The cave stood out on sensors, thanks to the presence of materials not native to the planet and indicating intelligent architecture.
“So, you’re sure there’s something useful in this cave, right Krystal?”
“The carvings outside means there’s gotta be something useful.”
“Did you learn that from a video game, or can you read the markings?”
“It’s a little of both, why?”
McCloud made a face over at Krystal, “So…. Any idea what it says, then?”
The blue vulpine huffed out at the male, “Some sort of totem, or medallion or something. It’s supposed to bestow great power on the wearer or something mystical like that.”
“Sounds fancy, lead the way, professor straw bra.”
The girl fox turned to face the space captain, “You know damn well that it’s leather… or cloth… It’s something fabric like.  I think.”
Fox’s muzzle turned up in a grin as he pressed on past her and down the tunnel, pistol blaster in one paw and a large lantern in the other, lighting the parts of the worn down former hallway where the cracks of sunlight didn’t dare reach, causing spiders, insects, and other creepy crawlies to skitter back into their little crevices and webs to hide from the bright illumination. For once, McCloud wasn’t jealous of the pretty girl’s airy, fun little outfit in the warm climate. Since he had on the big heavy booties and the thick combat trousers, and the puffy jacket, so Krystal had to deal with all the drifting spider webs, dust, hanging stuff, and everything, while also going barefoot along the cracked, jagged tiles. 
He did manage to push most of the sharper rocks off to the side of the hall with his boots, to keep from having her complain. That was his explanation in his mind. Though really, he did care for the blue girl, and didn’t want her to come to undue pain from his carelessness.
On to the main meat of this adventure! After about half a mile of dark hallway, the pair of foxes finally exited into a larger cavern like room, the walls inscribed with all kinds of intricate carvings, the details faded and half of the images blocked out with a green gray moss that was present on most of the planet’s surface. In the center of the room, on a stone pedestal stereotypical of an old adventurer’s temple, on a delicately carved ivory neck model, was a gorgeous little silver necklace with a large pearl set into the center of it like a gem. About ten feet back behind the center pedestal was another, smaller stand, with a much smaller reward, a pale cream colored ring, with an onyx setting, polished to near mirror finish, though coated in a thick layer of dust, like everything else in the cavern.
“You check out the necklace, I’ll take a peek at the ring. Sound good?”
“Only ‘cause you don’t have the neck for necklaces, Fox.”
“I’m just as pretty as Falco and you know it.”
“Whatever, just go play with your new ring.”
So, while Krystal was trying on the necklace talisman thing, Fox headed on over to check out the ring. Surprisingly, it fit his finger perfectly, sparkling in the lantern light in a dazzling fashion. “So, what exactly are these supposed to actually do? Looks like ninety percent of the instructions are plant food right now. You listening?”
There was no response from the other vulpine, instead, she was just standing there, looking somewhat relaxed, arms down against her sides, and her shoulders slumped a bit, eyes blank and staring at nothingness. “Hey Krystal, are you alright? Come on over here. Nothing bit you, right? We’re gonna have to get you checked out.”
Rather than respond, the blue fox instead just strode right on over to fox and resumed her original stance. “This ain’t funny, snap out of it.”
Taking it as a command, Krystal began to lightly snap her fingers in response. “That’s not funny in the slightest, I know you’re just fuckin’ with me and I’ll prove it. Take off that shitty bra and show me your tits.” 
Fox crossed his arms in triumph, positive that he’d get a grumpy huff or something similar from the other fox, but instead, his ears shot up high when Krystal reached back and popped the knot holding the cloth over her breasts, letting it fall to the ground below and revealing the perky nipples to the surprised McCloud. There was certainly some tenting in the front of his trousers as the pieces clicked into place in his mind…. The todd squinted a bit. “Okay… Might as well make use of my good fortune…. Open your mouth and get down on your knees for me.”
Without hesitation, the girl moved down onto her knees, maw open in a light O shape. Fox was definitely enjoying this view. Without much more thought to it, the male fox popped the buckle on his belt, then opened the front of his pants just enough to fish out the half erect vulpine member, his sheath, and those heavy, chicken egg sized orbs. A moment later and Fox had pressed the pointed pink tip up against the open muzzle, slowly pushing himself inside her mouth, until his fluffy sheath bumped up against her lips, then gave the command, “Suck me, I know you know how. That damn panther showed me the video to rub it in.”
She obviously had had practice, as she reached up and pressed the todd’s sheath back behind the bit of unswollen bulb at the base of his prick and began to bob her head, suckling like a professional, a little slurping noise escaping her lips with each time she slid backwards, a trickle of drool running down her chin and over the necklace. Before long, the fox was standing fully erect and panting, his paws resting on either of the blue ears, guiding her back and forth, holding her firmly against him whenever there was a particularly strong throb, or a heavy jet of precum. 
Fox let out a low huff, then drew back, panting heavily, knot half engorged already and preseed drooling from the canid length needily as an idea grew in the fox’s mind. Before he’d really thought it all the way through, his pants were off on the dirty ground, and he’d pressed the blue girl down onto her back, with him perched on top of her, rump on her belly, prick pressed right up between her tits firmly. Five or six thrusts between them, paws pressing them firmly together on either side of his dick were enough and the fox let out a loud, yapping cry of climax, knot swelling to the size of a tennis ball as he began to unload up onto the necklace and Krystal’s chin in long, goopy splurts of sticky, white seed. “Phew! Get yourself cleaned up nice and tidy. We’re gonna pretend like this never happened when I take the ring off. But we’re gonna continue this later, in a bit of a nice environment later.”

End of Part one!