At Shaggy's household, it was around 10PM at night. 

“News at the top hour!”, spoke a stern faced brunette man in a suit, “Strange UFO sightings have been reported in the vicinity, describing a cube like object-*BZZT!”

“Well, enough of that!” said a sandy short haired blonde male as he pressed the power button on the TV remote, making the screen go black.

"Okay, Scoob. Time to hit the hay." Shaggy said in his green long-sleeve shirt and pants PJ's as he went under the covers of the bed. "Okay, Raggy." Scooby said jumping onto and lying near the foot of the bed. Soon, both have fallen asleep. At around midnight, something strange was happening. There was a bright light beaming through the window, fixating on Scooby. Scooby stirred in his sleep a bit, but finally awoke to the light. It was hypnotizing him as he hopped off of the bed with Shaggy still in a deep sleep. He then opened the window and looked outside. Even though the bright light was still on him, he could still squint and make out other lights on the bottom side of the UFO. The space craft seemed more cubed and squared like than the usual roundness many people were familiar with.

Then, the light suddenly flashed very brightly, blinding the Great Dane actually knocking him out. Scooby later awoke and tried to adjust his eyes for a moment. He then realized he wasn't in Shaggy's room, he found himself curled up laying on a white bed in white room. The door entrance was across the room to the north of the bed, leading to a hallway that was white as well. Next, to the bed was a nightstand with a doggie bowl filled with some kind of pinkish fluid. It also had a drawer as well. There was another room at the opposite end of the room just to the left of the door, which looked like to be a bathroom. Scooby then hopped off the bed and decided to go out, but when he tried to open the door it was locked. Scooby just whimpered and a bit scared for being in an unusual place. Still he was stuck there until his abductors come to get him.

Scooby examined the doggie bowl with its contents a bit more. He sniffed at the liquid, and it smelled a bit sweet like strawberries. Leaning over the ledge of the bed and a bit curious about how it taste, he then dipped his tongue into the fluid. Once his tongue touched it, a full blast of strawberry flavor in his mouth and it was incredible to him! Scooby then took the bowl in his paws and guzzled all of it down. He then placed the empty bowl back down on the stand and he laid down on his back on the bed. 

However, a strange feeling was flowing throughout his body, a tingling feeling. Then, Scooby started to felt some pressure and little bit of pain in his hind legs. His legs started to reform as they become more human like and feminine and slender, and his paws morphing into human feet with dainty toes with black nails/claws and thick black paw pads on the balls of his newly formed feet. Scooby then felt a tug in his crotch as his penis unsheathed but then it started to shrink into him along with his sac until a pair of 'lips' took their place. Scooby was in total shock at the events unfolding before him. The transformation started its way up now to his mid-section. He then developed a thin waist and widened hips as his body becoming more human in likeness. Also, his butt began to bloat a bit, becoming slightly fatter. He then felt major pressure in his chest as they ballooned out into full EE cups with fat black nipples to boot. His forelegs began turned human armed like and a bit slim, and his forepaws started to mold themselves into feminine hands and fingers along with black claws. He felt major pressure into his face and muzzle as they both take a new feminine form. Shoulder length permed hair grew from the top of his head.

Scooby was now an anthropomorphic female dog! She was still in total shock, awe, and terror at what happened. "What happened to me?!" she yelled but quickly covered her mouth, realizing how it was now at a higher pitch than before and she can speak English fluently without her previous speech impediment. She then looked down at her huge breasts and with a furred hand; she touched one and immediately moaned at how sensitive it was. She now just sat there with utter confusion and bewilderment on her face at what happened.

Scooby was still in a state of confusion until it was broken moments later when she heard the door opened. Standing in the doorway was an anthropomorphic dog just like she is and naked as well. He was an anthro Doberman that stood 6.5ft with a muscular build like a marathon runner. His fur was black and brown; brown mostly on his torso, hands, feet, and muzzle and black covering the rest. What definitely caught her attention was the slick and black 8 inch shaft that was protruding from a brown sac. He walked in, closing the door behind him.

She was now having strange feelings for the newcomer. Her heart was pounding, she was blushing, and she was also starting get wet down there as cum gushed out of her vagina. She realized that she was attracted to him. 'He...looks so handsome...' she thought as her female mind was taking control. Scooby tried to shake such thoughts out of her head, her male side taking over for a bit and wanted answers to why she is this way. "Who are you? Did you do this to me? What's going on?!" she angrily said while immediately standing up from the bed. The Doberman just smirked a bit, approached her and wrapped his arms around her waist, making her blush as a result.

“I did this because I love you.” said the Doberman as he spoke in a voice that Scooby thought was dreamy and hot. Then suddenly, his muzzle pressed up against hers, locking them into a long kiss. Their tongues wrestled for nearly two long minutes as Scooby’s defenses were lowered and she became weak in the knees, making her wrap her arms around him as a reflex.

No! Get ahold of yourself, Scooby! You’re a guy…a guy…

Scooby’s weak male mind took some control back and broke the kiss before things gotten farther into hot and steamy territory.

“No…I need more of an explanation than that!” she said still wanting answers.

“But it’s true! It has been very lonely on this spaceship and I wanted to have a mate, someone to spend my life with together and to have babies with. Earth happened to be the nearest planet with canine species where I can find a mate during the whole Area 51 situation. I’ve been following you and looking at you from a distance when you’ve been on mysteries and having fun. You are very kind, caring, and loyal to others and just the right characteristics I want in a wife. And with the technology I have on board, turning you into one of my kind and female was just as easy as wagging your tail.”

“So all this because you love me?” she said with a noticeable blush.

“You’re so cute when you blush.” This comment just made Scooby blush even deeper than before.

“The bigger question, Scooby, is do you love me?”

Scooby was caught off guard and shocked at this, and found herself thinking about it more and more. The blushing Great Dane was caught in a dilemma as her female conscious steadily took over as it considered what the handsome Doberman did to her was sincere and romantic, wanting to answer with an enthusiastic “Yes!” while her fading male side tried to struggle to stay alive as it delivered a hard blow of memories.

But what about your old life with your friends?! What about Shaggy and the others?! What about them?! her male mind screamed.

Soon, her brain was flooded with thoughts of her mystery solving adventures with her friends from all over the world, being able to see new sights, and all the good times she had with Shaggy from their eating binges at buffets to eating exquisite cuisine on cruise lines. 

However, new thoughts were emerging. Her female mind thought about life with the Doberman in from of her. Images of kissing and mating, making a new home for their lives, having her newborn children suckle on her ample teats, traveling the universe, etc flashed before her eyes. With that, she made her decision. Even though she’ll miss her friends and they’ll miss her, she knew she’ll be happier with staying with the Doberman, she loved so much, and her friends would want her to be happy as well. 

It was that moment any of her masculinity was shattered and her female mind flourished with girly emotions and instincts and completely took over. As she stared into his dark brown irises, she smiled and gave him a quick peck on the muzzle. 

“Well, Mr. Doberman”

“Technically, it’s Doberson and my first name is Chet.” He said with nervous chuckle along with scratching the back of his head.

“Thanks for ruining the mood.” Scooby returned the comment with sarcastic quip and a cute giggle.

“Sorry about that…” Chet meekly said to a slight mumble.  
“It’s fine. Now as I was saying…Yes, I do love you and I want to be your mate and your wife!” she said as she wrapped her arms around him, and pressed her lips against his, and embraced him in a romantic kiss. Chet smiled widely, closed his eyes, and returned with a frantic kiss as now both tongues interlocked in a wrestling match, and wandering hands explored their bodies. As they did this, Chet found his hand caressing Scooby’s moist slit, soaking his fingers while making her shudder and gasp slightly. Scooby returned the sexual favor by having her hand fondle his balls and gave a tug on his 8 inch shaft, making pre-cum erupt from the tip and ooze down.

Chet knowing full well where it this was heading guided her to the bed as they make out hard. He then laid her on the bed as she eyed his drooling cock tip that stood proudly and she spread her legs to reveal a soaked womanhood. 

“So…what do we do now, handsome?” she said with sultry tone.

“Why we carry out the mating ritual of intercourse, my love.” He replied while coming onto the bed on all fours as his mate returned with a purr. 

To be continued