"Well, we need to stop any of this before it even starts, but we aren't sure exactly when anything strange began happening." A nameless girl no one here recognizes says.
Suddenly what looks like a giant mech fighting a small group of demons breaks through the front of the shop. Terri and Niamh scream as the demons fly into the bodies of everyone around them, causing them to collapse. A voice from the mech sounds. "HEY, YOU TWO! TAKE THESE AND GET OUT OF HERE!" Niamh jumps up and catches a small package.
The two girls look down and notice everyone growing more demonic features. "NOW!" screams the voice from the mech before grabbing the two and tossing them out of the shop toward the exit. "Ow..." Terri says, grabbing on of her large breasts. "That's one downside to sensitive breasts I guess" She thinks.
"Hurry, we gotta go!" Niamh yells, grabbing Terri's arm and running out of the mall. Looking back while they run they see the mall begin to collapse as more and more fights break out. Even causing some debris to land on cars near them. "Over here!" Terri takes the lead and rushes over to her car, the two hop in and begin to drive away from the chaos behind them.
A few minutes later they get on the freeway, noticing how much more empty the road going the other way is, other than the occasional cop car or firetruck. "so uh... do you deal with stuff like this often?" Terri asks. "No way! Ye know how badly things ought to be messed up for THAT many timelines ta be comin' here!"
The rest of the ride continues in silence, the two girls unable to think of what to say. After about an hour, a few miles out of the city they decide to pull over. Terri gets out of the car and stretches, looking back at the city, noting how much smoke is rising. Niamh follows suit but pulls out the already opened package in the process.
"Hey, did you figure out what that thing is?" Terri asks. "Yeah, here..." The exhausted Irish girl pulls out what can only be described as a ray gun and presses a button on it, causing a projection to appear of their heads. It looks like it barely functions and the picture is blurry, but Terri can make out what looks like an older Aubrey, and this time she means old, she looks like she's in her 50's, barely keeping some red color to her hair.
"Alright listen, I don't have much time." The two instantly recognize the voice as the one from inside the mech. "Terri, I'm giving this to you. I don't know why, but everytime anyone else tries to fix this mess it just keeps getting worse. It seems like any time a version of yourself travels back to try and fix this mess it seems to fix it a bit before going off the rails again. But I think I've figured it out, I know what started this all, and we all need you to stop it." Aubrey turns her head to look towards a robotic scream behind her. "I'm out of time, go back to before you got that potion. That's what starts this whole thing, we're counting on you!" The video ends with Aubrey picking up the camera and hopping into what looks to be the inside of that mech.
"What... me? I started this?" Terri stares in disbelief. Niamh puts her hand on her shoulder. "It was both of us Terri, I should've never sold ya that potion." The two sit for a moment until a sudden explosion breaks the silence. They turn around to see a giant metal ball, it opens up and a robotic looking Niamh jumps out, quickly running at the two and tackling her human counterpart. "Need to be human, need to be human." The robot keeps repeating while struggling to keep the human Niamh on the ground. "Quickly! take it!" Niamh throws the gun to Terri. "I set it already, just shoot!" Turning away from the horrific sight in front of her, Terri aims the gun at her chest, taking a deep breath before firing.
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Waking up in a panic, Terri quickly jumps to her feet, looking around her new surroundings as her body races with adrenaline. She... she's in her schools locker room. Trying to pull her phone out of her pocket to check the date fails as her hand brushes against bare skin. Looking down Terri realizes she's completely naked, her enhanced body on display. Immediately her reaction is to cover up, and rushes over to an open locker, pulling out some clothes.
After putting on a Rather skimpy looking cheerleader outfit, she is slightly annoyed at her stomach showing. But she also thinks it's kinda cute. Wait... She quickly reaches for her head and realizes the headband is also gone, letting her mind revert back into bimbodom. "Alright, I have no choice but to deal with this." Looking around she sees a phone sitting on a bench, she grabs it and checks the date. She's a week before buying the potion. That's a bit discouraging, she's not sure if she can deal with the mental changes much more than a couple hours, not to mention an entire week.
Before she can think of a plan from here, Terri hears voices coming into the locker room.