Lisa slowly wakes up from a deep slumber, she was used at not sleeping enough, some tired marks in her eyes hidden beneath her glasses everyday which she didn't mind having, for her, science was first, thought today she managed to sleep after days of not doing so, even then it was not enough, she still felt very tired.
Lisa: "Ugh…"
It was definitely early, hopefully she could see how the scheme she worked really hard to develop had played out, but her blurry vision told her to look for her glasses, so she moved her hand at her bedroom desk but unluckily did not find them.
Lisa: "Dang it."
She raised from the bed until her hands touched something.
Lisa: "Huh?"
Her right hand recognized it immediately, her glasses, possibly she was so tired from the deprivation of sleep she just fell on the bed, her left hand had a different time placing in Lisa's head what it was, slimy? Wet? Warm, slightly soft, slightly hard, her hand could not grasp it, what came to mind was one of Lynn's balls deflated but it was not a spherical rough shape, it was smooth and had flat and round parts in a consistent figure.
Lisa: "What the…?"
She put on her glasses to see clearly what in the world she was touching, Lisa's eyes went wide to see she was actually on Lily's bed touching Lily's back, sleeping right next to her, her body sweating and only with her underwear on, Lisa then looked down to look at herself, the exact same state her sister was in, it was not much like her to react or show any signs of expressive faces, but now she was blushing embarrassed and about to freak out, she reached for Lily and shook her to wake up.
Lisa: "Lily! Lily!"
Lily: "Hmph…"
Lisa: "Lily, wake up!"
Lily mumbled as she rubbed her eyes and looked at Lisa with dazed eyes and sleepy voice.
Lily: "Yes, master?..."
Lisa looked at her surprised and Lily looked back concerned, then as they stared at each other they both blushed assimilating what just happened; Lily let out a small shriek that was cut out quickly by Lisa as she probably woke up everyone at the house.
Lily: Aaaaaaahhhhhhh-!

And all the siblings in the house came into their room to see what was going on, Lola, Lana, Lucy, Lincoln still in their pajamas and Lynn, Luan and Luna dressed casually.
"What happened!?"
"You girls alright!?"
The sight of Lisa on Lily's bed covering her mouth and both sweating in underwear was not something to expect, trying to not cause any misunderstandings, Lisa uncovers Lily's mouth and explains a bit nervously.
Lisa: "Oh- Well, Lily had a nightmare and I was just trying to comfort her."
Luna stares in confusion.
Luna: "Why are you almost naked, dudes?"
Lily stays silent with her face red in shock as Lisa continues to come up with an excuse.
Lisa: "It getsh really hot at night in our room so we sleep like thish sometimesh."
Lisa gulps as she process she had a tongue stroke while talking, that didn't happen to her in years back when her teeth were still growing, fortunately for the youngest louds, Lynn spoke.
Lynn: "No problem guys, I sometimes sleep fully nude when the heat is too much."
Lucy: "That's true, it's disturbing when she sleepwalks."
Lynn: "Hey! Lincoln sleeps like that too!"
Lucy: "He doesn't sleepwalk to another's room, Edwin thinks you should have more modesty."
Lynn: "Well tell him that- Wait, I'm not arguing with a statue!"
Luan steps up now that the main issue seems solved so the arguing shouldn't continue.
Luan: "Sounds like this discussion is heating up, ha! Get it?"
Everybody groans at the bad pun and goes on their way, Lily and Lisa sigh in relief then stare at each other concerned, Lisa covers herself only with her lab coat as she looks at her empty desk.
Lisa: "Someone came in and took my mouse trap."
Lily: "Also used it on us."
Lily hides on her blankets behind her.
Lisa: "Indeed, and apparently deleted my security footage from our room."
Lily: "You have cameras here!?"
Lisa bites a pencil as she thinks.
Lisa: "I doubt this person knew how to bypass my passwords and overall, about the security, most likely used the device on me to disengage it."
Lily looks confused and nervous while holding the blankets tight.
Lily: "But 'who' could've done this? And why, you know, un-clothe us?"
Lisa looks pensive processing the situation.
Lisa: "That device is a high tech ultrasonic mind control tool made by me, so stealing it doesn't surprise me, making us…"
Lisa takes a moment, actually feeling embarrassed about what could've happened while they were in trance and she straightens herself trying to focus.
Lisa: "Whatever happened, our priority is finding the sibling culprit from taking my invention."
Lily stands up from her bed as Lisa reflects on the matter.
Lily: "Sibling? You think our sisters stole it?"
Lisa: "Yes, the most logical theory is that one of them did it."

Some time pases Lisa and Lily come downstairs fully clothed to the kitchen.
Luna: "Oh, you getting breakfast too?"
Lily: "Y-yeah…"
Lisa: "Certainly."
Luna brings them both a plate as they both look down at it.
Luna: "Hope you're feeling better after that nightmare, dude."
A few minutes earlier Lisa was scribbling on her whiteboard.
Lisa: "Okay so, it had to be someone close enough to know what I built and when we would let our guard down."
She had her whiteboard with notes and pictures of some of their family members in red circles.
Lisa: "There are 13 people with access to the House, our parents wouldn't do something like this so they are out, Lori's too busy with Bobby so she's out, Leni's who knows where and could never plan something this calculated so she's out, that leaves 7 Louds in the house, we were both here when we blacked out and woke up with no recollection of what happened around 2 hours."
Lily: "If it all happened between 2 hours then when? And how?"
Lisa looks at a paper in her hands.
Lisa: "After an analysis, the coffee we drank had residues of sedatives, possibly someone heard our conversation and went downstairs to drug it."
Lily: "That sounds creepy, who could've done such a thing?"
At the whiteboard the pictures of the rest of the Loud siblings where marked with green and blue circles.
Lisa: "My main suspects are Lola, a control freak, manipulative, intimidating and wants to get away with anything; Lucy, creep in many ways, silent, mysterious, a fan of taboos and possibly very kinky; Lincoln, a dweeb, strategic, creative, several Ace Savvy comics with hypnotic villains might have given him some crazy ideas; and finally, Luan, scary, crazy and possibly a sociopath, her pranks go too far sometimes and this could be one of them."
Lily looks at the boards disgusted.
Lily: "That's a pretty awful way to describe them."
Lisa: "I know, but it's what they might be until we find the real culprit, the closest to our room are Lola, Lana, and Lincoln but in the meantime I'd say all 7 are suspects."
Lily: "What do we do?"
Lisa turns to face Lily with a serious look.
Lisa: "I'll run some tests on us to see if I can discard physical possibilities and find more clues while we eat something, stay alert if you see anyone acting suspicious."

Back at the kitchen in the present, Lily stares at all of her siblings looking and acting perfectly normal, Lisa was being cautious with her looks and also finding nothing out of the ordinary, still both considering how much of a quiet day it was at the Loud house.