*Click*

The light from a nightguard's flashlight switched on, illuminating the dark lobby of the Maretropolis National History Museum.

"Alright, the first day, let's try not to have a repeat of last week." A stallion mumbled to himself, about to begin the first rounds of his first night on the job.

Shattered Mirror wasn't exactly the luckiest stallion in Equestria, especially when it came to keeping up jobs. During his last job as a night guard for a research facility downtown, he had managed to accidentally set let loose a gigantic, and apparently magical, squid monster into the city.

Thankfully, the Power Ponies had been able to stop the monster, though not without some...tentacle action. Unsurprisingly, Shattered had been promptly fired, but thankfully not fully blamed for the event. In the aftermath of the incident, it was discovered that the huge tank holding monster was in pretty bad shape and hadn't been properly maintained. Just leaning against the glass was all it took for it to shatter...

After that, Shattered had been trying desperately to find himself a new job, but despite not being at fault for the accident, word had gotten around about his role in the monster's escape and no-one was hiring. He had been just about to give up and consider his other options when, by some miracle, the Maretropolis History Museum accepted his application. Hopefully, he could keep it this time.

'Maretropolis may be the greatest and most beautiful city in all of Equestria, but it certainly isn't the cheapest...'

A few minutes into his patrol he began to feel...uneasy, almost like he was being watched from somewhere nearby. The exhibit displays in each room weren't helping either. A towering dinosaur skeleton barring its sharp teeth, a likely haunted suit of armor holding a rusty sword, and a creepy painting of a mare that seemed to glare angrily at him from the end of a hallway. All of it sent cold shivers up his spine.

'This is going to be a very long night, isn't it?' He internally groaned.

*Clunk!*

The sound of something metal clattering to the floor close behind him nearly caused him to jump out of his coat. Whirling around, he pointed his flashlight in the direction of the sound. It came from the room he had just left, 'The Ancient Pony Weapons Exhibit'.

Gulping audibly, he peeked his head partially around the doorway to the exhibit and quickly scanned the room with his flashlight, searching for any signs of movement. The room was packed with large glass cases and cabinets, many of which contained tribal clubs, medieval swords, combat armor, or other old pony weaponry. In the very center of the room, a marble pedestal, topped with a small glass case, was the centerpiece of the exhibit. The small glass box contained a recent addition to the museum. A single, very odd-looking knife.

"H-hello? I-is someone out there? Show yourself!" He demanded, trying to sound intimidating, but ending up sounding more scared than anything.

'Oh, please be nothing, please be nothing.' He mentally chanted to himself, getting more flashbacks from last week.

After what felt like an eon of long drawn out silence, Shattered let out a relieved sigh.

'Gah, it was probably just my paranoid brain playing tricks me...'

He shined his flashlight back around the room one last time but still failed to see anything amiss. He turned back around and left the room, bound for the rest of his patrol, though he did take occasional quick glances over his shoulder.

As the footsteps of the guard pony slowly faded away, Scarlet colored eyes appeared in the vent, right above where the stallion had been previously standing.

"Huh, that...went a whole lot better than I expected it to." A unicorn mare mumbled to herself from within the vent, holding a metal screwdriver which she had accidentally dropped in her magical aura.

"You need to be more careful, Mirror!" The mare named Mirror scolded herself. 'I really don't need another screwup like the research labs! At least that giant squid monster had been a pretty good distraction.'.

Mirror Glance had on a full-body, zip-up, black catsuit with a utility belt that was fastened tightly around her waist. To conceal her identity she also wore a black mask over her upper face and eyes. Her dark brown mane and tail had both been cut to only a few inches, preventing them from getting in the way as she did her job.

She was saddled with two fairly large D-Cup breasts and a big, nicely curved butt. Being a cat burglar, most would probably think that having Mirror's rather generous feminine features would end up being far too encumbering, but Mirror never had any issues with them. Often times, she found them to be far more useful than hampering, especially on the rare occasions that she got caught in the act of stealing something...

Shaking some good memories from her mind, Mirror refocused her attention back to the task at hand.

'I'd better gets this done quickly, my client wanted this artifact delivered as soon as possible and that guard could decide to come back at any time.'

Using her recovered screwdriver, Mirror finished detaching the vent's filter and stowed the screwdriver back into her belt, making sure that it was secure this time. She levitated the vent cover up and into the shaft before slipping silently from the vent and down into the room below. Using her magic Mirror was able to catch herself just before landing on the ground, her breasts bouncing slightly from the sudden stop. Quickly, she snuck over to the center display and inspected her target lying within.

The Desperation Dagger....

Her client had requested that the ancient dagger was to be acquired from the museum, allegedly believing it to be secretly enchanted. She didn't know exactly why they wanted it, but with how many bits they were willing to pay, Mirror didn't ask many questions.

Inspecting the glass case, she noticed a small pressure sensor off in the far corner. It would likely sound an alarm should she simply lift the glass case up off the pedestal. Mirror closed her eyes and concentrated her magical energy into her horn, casting one of her favorite spells. Suddenly, her right hand began to shift and change, becoming partially transparent. The effect spread about halfway up her forearm before stopping just below her elbow. With the spell cast successfully, Mirror opened her eyes and inspected her arm for any imperfections.

With a confident smile, Mirror reached out towards the case and smirked as her hand passes cleanly through the glass. She easily grabbed onto the hilt of the dagger and with another surge of magic, it too becomes transparent, allowing her to pull it back through with ease.

Not wanting to use up too much more of her magical reserves, Mirror ended the spell and inspected her prize. It appeared to be made from bone, yet felt like some kind of heavy metal. Perhaps that was the enchantment that her client was after? There was also a small image carved into the knife's handle, a golden waterfall. The knife was oddly warm in Mirror's hands and it began to glow very faintly. After a few moments, the glow subsided and she shrugged, attaching it to her belt.

'Hopefully that doesn't draw any attention. Now, it's about time I got out of here before.'

"Hey! S-stop right there!" A shaky voice suddenly shouted behind her, her body illuminated by the beam of a flashlight a moment later.

'Horseapples...well, time to see if I've still got it...'

The Masked Matter-Horn was standing proudly atop a tall building that overlooked the surrounding city blocks. She watched and listened carefully for any potential signs of trouble or commotion. She felt ready and willing to take on whatever Maretropolis had to throw at her. Though, if she was being honest, she kind of hoped that nothing too major happens at all. She didn't have the rest of the team to back her up tonight.

Due to a recent surge in crime rates all across the different parts of Maretropolis City, the Power Ponies had been forced to split up to more effectively deal with the rising crime rate. This, unfortunately, also meant that police's resources had to be stretched thin as well, meaning slow response times and not much in the way of backup. So far, it had been a quiet night, with not so much as a purse bandit running amuck, but there was no guarantee that would hold forever.

The Masked Matter-Horn was wearing her famous superhero outfit: A light purple spandex bodysuit and her signature light-blue magic-resistant plates around her shoulders and with one on each hip. To conceal her identity, she wore a set of gold-plated goggles over her eyes. Her figure was fairly curvey as well, with firm C-cup breasts and wide hips.

Due to just how skin-tight her suit was, it clutched to her every curve and crevice, leaving very little to the average onlooker's imagination. Even her marehood was partially visible in between her legs, along with her puffy anus. She didn't mind the stares it earned her though, it's wasn't like anypony knew who she really was anyway.

The Masked Matter-Horn was suddenly ripped from her thoughts as the high pitched buzzing sound of a building alarm went off close by. She immediately recognized the alarm's signature sound.

'The Natural History Museum!'

Springing into action, she leaped from the high rooftop, levitating herself through the air, and heading in the direction of the museum. It didn't take long to get there and upon reaching the roof of the building opposite the museum, The Masked Matter-Horn arrived just in time to see it's front doors suddenly burst open. A rather busty looking, catsuit wearing, mare sprinted out from the museum, a cloud of smoke flooding from its doors.

'A thief!'

The cat burglar sprinted down the sidewalk, diving past a confused pedestrian and before darting down an alleyway. A few moments later an oddly familiar looking nightguard came out from the museum, looking more than a little flustered, his cheeks bright red.

The Masked Matter-Horn lifted herself above the alleyway and gave chase. The mare had likely stolen some kind of priceless historical artifact from the museum and planned to sell it to some infamous crime lord for bits.

'Not in my town you don't!'

As she continued running down the dark alley, Mirror Glance reached up, zipping her suit the rest of the way up. Thankfully, the guard had been just as nervous as he sounded. She'd been able to distract him just long enough to allow her to slip by and escape. Still, this wasn't the plan. Mirror just hoped she could get out of here without any trouble.

'Come on, get a hold of yourself, I know it has been a while but this is my second screw up in less than a week!' She mentally berated herself.

Turning to Look over her shoulder, towards the street she had fled from, Mirror was relieved to see no police ponies or even the guard from the museum following her. Had she really gotten away with it this easily?

"Stop right there you criminal scum!" An amplified voice suddenly boomed from up above.

Mirror came to a stop and looked up, her eyes widening as she saw none other than the captain of the Power Ponies, The Masked Matter-Horn herself, floating above the alley. The superhero was surrounded by her own magic aura, arms crossed, and an angry expression on her face. She reached out and pointed a finger at Mirror.

"Surrender now and you will not be harmed! Don't make this harder than it needs to be." The Masked Matter-Horn commanded, her horn glowing bright blue as she readied a spell.

'Shit, this is bad! If she's here then the others probably aren't very far behind!'

Mirror broke into a sprint, darting for the end of the alley where it would split off into three different directions. This side of town was known for it's long and labyrinthian alleyways which ran behind most street-side buildings. As Mirror had been about to reach the split-off point, she suddenly felt the hairs of her coat stand up on end under her suit. Without even thinking about she dodged to the left, just in time to avoid a beam of frost which crashed into the ground where she had just been.

'Wha-? H-how did I?'

Mirror didn't have much time to wonder before she felt the sensation creep up again. She lept forwards involuntarily, narrowly dodging yet another icy blast.

'Okay, I don't know how I'm doing that, but I'll have to worry about it later!'

She dashed down the leftmost alley at the split and Mirror heard the frustrated scowls of the Power Pony captain not too far behind. Mirror remembered the knife which she had come here for, a plan suddenly formulating in her head. If she was remembering this particular side of town correctly, then the alleyway coming up on her left would lead to a series of sharp twists and turns. If she played her cards right, she had a way of getting this persistent Power Pony off her tail.

The Masked Matter-Horn shot down yet another ice bolt at the thief, only for the mare to once again dodge it just before impact.

'Drat! This mare is a lot more nimble than she seemed. How does she know how to dodge my magic like that?'

While the thief was indeed also a unicorn, there was no way that the thief could be well versed enough in magic detection to be able to sense her spell buildups. Catching this one would be important, any criminal that was capable of something like this could become a serious threat to Maretropolis.

Suddenly, the thief dove left around another corner. Matter-Horn also knew this area inside and out, and the way the thief had just turned down was inevitably going to lead to a dead end. Now all she just had to was follow her until she cornered herself! In addition, many of the buildings this particular alley ran behind were old and long since abandoned, with many of them not even having proper fire escapes or doors through the back.

'Soon, you will run out of places to go, and then you won't be able to escape justice!'

The Power Pony seemed to be giving Mirror some extra room for some reason.

'Maybe she knows that this is a dead end as well? Whatever, that won't matter if my plan works. If it does, I will have a plenty big enough gap to escape.'

Mirror was now holding the stolen knife in her right hand. It glowed with a dim golden light as, unbeknownst to Mirror, a small symbol, just like the one carved on the knife's handle appeared on the back of her hand...

"Heh, she'll be distracted alright." Mirror whispered to herself darkly, a sinister grin accompanying her now glowing golden eyes.

Matter-Horn watched as the thief rounded the final corner up ahead before the inevitable dead end. She had her for sure now. But as the confident feeling Power Pony glided around the corner to confront the criminal, horn charged and ready, she was shocked to find not a single soul present.

'What?! Where did she-?!'

Landing on the ground, The Masked Matter-Horn looked up and around but saw nothing, not a single possible route of escape. No fire escapes to climb up, no back doors to break through, and not even any windows.

'Could she have teleported away? Surely she would have just done that earlier if she was able to this whole time. Where In Equestria is she?!'

Behind The Masked Matter-Horn, the transparent figure of the thief emerged from the brick wall of the alleyway, a glowing knife held tightly in her hand. Though faint, a sinister grin could be made out on the figure's face.

*Slash!*

"Gah!" The Matter-Horn gasped, stumbling forwards and falling to her knees.

A magical burning sensation spreading quickly through her body from a long gash on her back. She turned to face her attacker to find the thief standing there, a golden glowing knife in her hand and staring at her with equally golden eyes.

'How did she get behind me?!'

In an attempt to gain some more distance, The Masked Matter-Horn concentrated her magic in an effort to teleport away from the thief. Yet, just as quickly as she built up the magic in her horn, it was drained away. It flowed through the air from her horn, feeding to the thief's knife. As the last ounce of the Power Pony's magic was completely drained away, she shakily stood back up, feeling very weak both magically and physically.

"W-who are you?!" She demanded, straining just to keep on her feet.

The thief only chuckled in amusement, completely disregarding her question. She winked at the weakened captain before turning around and dashing away and into the night.

The Masked Matter-Horn tried to give chase but was stopped dead in her tracks as a sudden and immense pressure makes itself known in her bladder. Both her hands immediately shot down, digging themselves her crotch in a desperate effort to hold back what felt like an entire ocean's worth of liquid.

"N-no! Not n-now!" She grunted, pressing her thighs tightly together.

The burning sensation from the cut on her back seemed to fade away completely, leaving the mare desperately trying not to have an accident in her suit. Yet, due to her intense magical exhaustion, she is unable to stop the occasional spurts of urine from leaking out, creating a dark wet spot in the spandex.

'Where is this coming from?!'

The Masked Matter-Horn was used to the occasional unexpected urges to use the bathroom, but it was never with this level of urgency right off the bat. With the thief all but forgotten, she focused all her remaining strength on holding back the oncoming tide. But, just as she felt like she was finally getting it under control, a painful cramp struck her bladder, making the pressure double instantaneously.

Her tired muscles were finally forced to give in and a torrential stream of piss begun flowing out of her, making a sharp hissing sound as it hit the inside of her spandex suit. The crotch of the costume was immediately soaked, her hands filling with warm urine which overflowed and added to the growing puddle beneath her. Yellow waterfalls cascaded down her legs, creating dark stains that shimmered in the moonlight.

Matter-Horn's breaths felt shaky and uneven as she continued wetting herself, but not from shame, exhaustion, nor even embarrassment, but from the immense pleasure that echoed from her sex. Her mind was completely clouded with nothing but feelings of intense relief, lust, and the warm sensation of liquid flowing down her legs.

Her eyes rolled back and she screamed out in extasy, reaching orgasm without so much as touching her quivering marehood. At the peak of orgasm, she collapsed, face-down on the ground, her piss puddle still growing around her. As darkness closed in, her corrupted mind was flooded with lewd fantasies. Being found like this by a bunch of horny gangsters, her soaked rear and inflamed pussy sticking high up into the air, just waiting to be filled.

It was only once she had fully fallen unconscious that the flow actually started to slow, eventually becoming a light drip between her legs. She was left unaware as a golden waterfall symbol appeared on her back, right where she had been struck by the thief's blade...

Author's Notes:

Fun Fact Of The Side Chapter: The Masked Matter-Horn is a really long name.

I do plan on doing more of these side chapters centered around Spike's comic universe but it will likely be on very rare occasions when the inspiration hits me. Its good practice for when I'll be making up new story arcs anyhow.