All characters depicted are 18+. This story contains the following themes: diapers, feminization, and sissification.

A young man has been left alone to watch the house while his dad, step-mom, and their new baby go on vacation. They're supposed to be gone for a week and while he would love to go along, it's out of the question. He flunked out of college so has been living back home since. His step-mom argued he should pay back some of the lost cost by housesitting, to which his dad agreed.

He was incredibly annoyed watching them drive away but once they were out of sight, he grinned. It was time for some payback.

He'd seen his step-mom going into her baby's fancy nursery with a box full of jewelry and leave without it. He didn't have any cash, but he was sure there must be something in there worth pawning off. Then he'd be able to enjoy some finer things like a new video game while they were away.

Waltzing into the nursery, he took in the surroundings. The room was painted pale pink with tons of new toys, plushies, and furniture scattered about. The elaborate crib itself was massive and looked like it could easily accommodate him if he were to lay in it...as if.

He was there for the jewelry, so he began his search. Digging through dresser drawers, all he could find were stacks of diapers in various sizes and colors, some looked like they were way too big for a baby too. His step-mom was probably thinking ahead for when her baby grows?

In the closet, all he could find were frilly dresses, nightgowns, jumpers, and onesies. Annoyed at his lack of anything worth discovering, he began throwing toys and furniture aside. There had to be something in here. He didn't want to waste his entire evening in some dumb nursery.

In his angered state, he failed to notice the large plush bunny in the corner of the crib. This meant he didn’t see it start to turn its head, red eyes aglow. But he did hear a voice.

"NURSERY ONLINE. BEGINNING BABY MONITORING SYSTEM. ERROR. MOMMY AND DADDY ARE AWAY. BABYSITTER PROTOCOL ACTIVATED. BABY JOSEY IS DETECTED IN THE ROOM, BUT IS NOT WEARING A DIAPER. PLEASE PLACE DIAPER ON BABY JOSEY OR WARNING NOTIFICATION WILL BE SENT TO MOMMY AND DADDY. PICTURES AND VIDEO ARE CURRENTLY BEING TAKEN. THEY WILL BE SENT UNLESS INSTRUCTIONS OBEYED."

"Shit," he muttered to himself as he jumped at the sound of the robotic voice. There must be speakers he couldn't see. His step-mom probably went all out and bought her baby a full-blown automatic nursery. He'd heard about systems like those and realized that he'd be in huge trouble if a video of him snooping through and tearing this room apart were sent to his parents.

Sighing, he looked down and saw one of those massive diapers from before. Picking it up, he noticed it said 'Baby <3 Sis' on it. "Yuck," he thought. Taking his clothes off and swallowing his pride, he laid down on the largest changing mat he could find and taped himself into the fluffy diaper.

"DIAPER DETECTED ON BABY JOSEY. NOTIFICATION REDACTED." He sighed in relief. The dumb nursery must think he's his baby sister. Or maybe it only detected whether a diaper was on someone? Picking up his clothes, he began waddling his way to the door. Upon attempting to turn the knob, he found the door wouldn't budge.

"BABY JOSEY DETECTED IN HER NIGHTTIME DIAPER. DOOR IS LOCKED UNTIL MORNING OR AN AUTHORIZED USER UNLOCKS IT."

"Double shit," he exclaimed. Now he was stuck in here until morning. Frustrated, he threw his wadded-up clothes at one of the shelves. He immediately regretted his action as they hit a box full of pre-made formula, splashing his clothes with white liquid.

"ERROR, WET CLOTHING DETECTED. PLEASE PLACE SOILED GARMENTS IN LAUNDRY CHUTE. NOTIFICATION WARNING IN EFFECT." A small hole opened in the wall, with the sound of suction indicating it was part of their new laundry system. Sighing, he gathered his formula-soaked clothes and unwillingly placed them into the chute.

"Stupid nursery..." he grumbled as the voice redacted a second notification. Now he was stuck in this room in nothing but a diaper. He figured it was best to keep it on than try removing it, considering it was able to detect him putting it on. He shivered as the room began cooling down, with the AC running faintly in the background.

"ERROR, BABY JOSEY IS COLD. PLEASE DRESS THE BABY IN APPROPRIATE CLOTHING OR NOTIFICATION WILL BE-"

"Yeah, yeah! I know! I have to dress 'Baby Josey' in some frilly prissy dress or a notification gets sent, I get it." He seethed as he grabbed the first few items on the floor within reach. Even as he put on a tiny nightgown with multiple layers of ruffles, the voice kept spewing out more warnings.

Frustrated, he kept pulling on more pieces of clothing to appease it, ranging from heart-patterned stockings to satin baby mittens to a wig he had to pull off one of the dolls adorning the room. How was a wig part of getting a baby dressed?!? He was almost at a breaking point when he heard the final warning.

"ERROR, IT IS NOW TIME FOR BEDTIME AND BABY JOSIE IS NOT IN HER CRIB. PLEASE PLACE BABY IN CRIB AND PULL UP THE SIDE BARS. CURRENT VIDEO OF BABY JOSEY BEING DRESSED WILL BE SENT TO AUTHORIZED USERS OTHERWISE."

Defeated, he waddles over to the crib and complies with the voice. Pulling up the bars, he hears a sharp clink sound as the side locks into place. A feeling of panic settles in as he realizes the crib is too tall to climb over and after a few attempts, there's no way to open it from the inside. He can also see a padlock on the outside, it must have locked into place when he raised the bars. He is about to start crying when he hears a clinking noise. A side panel dispenses a warmed baby bottle filled to the brim with formula.

"IT IS NOW TIME FOR BEDTIME, BABY JOSEY. DRINK YOUR NUM NUMS AND YOUR DIAPER WILL BE CHECKED IN THE MORNING." The lights dimmed and a nursery song started to play overhead. Sighing, 'Baby Josey' picked up the bottle and began drinking. As "she" settled into "her" crib, Josey began drifting to sleep.

"At least dad and his new wife will never know what happened...I can look for the jewelry in the morning after my diaper change..." The baby slept soundly as the plush bunny watched over its charge. Meanwhile...

A long distance away, Baby Josey's step-mom smirked as she scanned over the recorded videos of her new step-daughter. She knew that little brat might try and steal her jewelry, so she made a show of hiding it in her nursery. Unfortunately for Baby Josey, she went back and took the jewelry when he wasn't home.

She held in her laughter, overjoyed at how easily fooled he was. There was no automatic nursery, she'd been using a text-to-speech app to play over the nursery's speakers. Something available on most basic nanny cams.

A few other things were controlled from her smartphone, like the security system locking the door and crib, the AC being turned way up, and the bottle warmer being turned on. The whole automatic nursery thing was entirely in his mind. She did place a timed padlock on the crib just in case he fell for the trap.

Grinning, she absolutely loved the threat of using the video and photo warnings to trick him into humiliating himself more. The next time he tried to back sass her, she could pull out an edited video of 'Baby Josey' dressing herself. It would be an easy way of making sure he kept the house clean while he stayed with them too.

Now, she needed to rest but first thing in the morning, Baby Josey would be required to go on a little "stroll" to the park in the automatic nursery's "smart" pram with "self-monitoring capabilities". This vacation was going to be super fun with this additional entertainment!