Disclaimer: I own nothing that has to do with MLP: Equestria Girls or any other cartoon shows.
Same Day: Kyln Prison
Inside: Cafeteria
Ground Floor / Second Floor & Watchtower Catwalk
Rainbow and Fluttershy are still shouting, with Fluttershy blocking the bullets that are fired upon them and Rainbow shooting security droids 8 and 9. Behind Rainbow on the second-story floor, Pinkamena and Sunset are at the railing. Pinkamena calls out to Rainbow, "Rainbow Dash!" Rainbow runs out of bullets and turns to Pinkamena as she lets go of the gun. Pinkamena throws the wristband to Rainbow, who catches it.
Rainbow shouts to Fluttershy as she points to the watchtower with the wristband in her hand, "Move to the watchtower!" Fluttershy walks closer to the watchtower as Rainbow hums and starts to quickly and skillfully put the battery and the wristband together.
On the second-story catwalk, Pinkamena gets on a railing. Sunset, watching what she's doing in confusion, "What are yo-" She cuts herself off as Pinkamena jumps up from the railing to the watchtower catwalk railing. She jumps over the railing onto the catwalk. Pinkamena looks down at Sunset, who looks down and shakes her head, "That's not happening." She goes to run but stops when she sees security guard 18. She turns and tries to go another way but sees security droid 10 nearby. She mutters in frustration, "Damn it." She grabs the railing and climbs up. She looks at security guard 18, who then notices her and runs towards her. Sunset takes the risk and jumps up to the floor above her with her strength. She successfully goes up high and grabs the top railing to steady herself. She breathes out, relieved and impressed with herself, "Whoa." She looks behind her to see the catwalk Pinkamena is on and climbs on top of the railing she's on. She jumps again, going high up, and grabs a bar from the railing.
Sunset sees a hand offered to her and looks up to see Pinkamena, who nods to the left, "Come on." Sunset grabs Pinkamena's hand, and Pinkamena helps Sunset climb up and over the railing.
Ground Floor
Twilight runs across the area with the prosthetic leg and gun in her hands. She runs towards Fluttershy, who is growing her arms and legs up to the catwalk that Pinkamena and Sunset are on. Fluttershy grabs the railing with her vines and wraps them around it. Rainbow climbs up Fluttershy's arm and goes through the bars with Sunset's help.
Twilight gets to Fluttershy's legs, and she throws the gun away. She puts the prosthetic leg on her chest/shoulders and collarbone and starts climbing up as quickly as possible without losing the leg and falling. Halfway up, Twilight turns her head and sees security droid 11. Her breathing picks up as security droid 11 goes to fire at her.
Suddenly, Applejack jumps on top of security droid 11, taking it down to the ground as the droid fires. Applejack holds security droid 11 in her hands as it fires at the floor. Applejack grunts as she uses her strength to lift it up and rips it apart, destroying the security droid.
Applejack looks up at Twilight and shouts, "You! Woman who has lain with an A'askavariian!" Sunset looks over the railing, down at Applejack and Twilight.
Twilight adjusts the leg in front of her, saying defensively, "It was one time, dude." She points up to Sunset on the catwalk, "I'm with her now." Sunset tilts her head, and Twilight continues to climb up to the watchtower. Applejack walks forward and starts climbing Fluttershy's leg, following Twilight.
Inside: Watchtower
The watchtower guard is looking out at all the damage and is contacting the rest of the prison, "We need all available guards in full combat gear-" He gets cut off as he hears an alarming beeping. He slowly turns around and sees the six prisoners standing together as the door opens (from right to left);
Twilight is holding the prosthetic leg over her right shoulder and holding Sunset's hand with her free one beside Twilight on her left. Rainbow is standing in the middle in front of Sunset, holding onto the battery. Pinkamena is standing beside Rainbow with her left hand on her hip, and her head tilted to the left. Applejack stands behind Pinkamena beside Sunset with her arms crossed, and Fluttershy is behind everyone as she jumps over the railing and lands on the catwalk.
The six all look at the watchtower guard with glares and serious expressions. The guard fearfully raises his hands, and they all casually enter the tower. Pinkamena, not looking at him, pulls the guard up to stand and pushes him towards the exit.
The watchtower guard looks in shock. When he sees Fluttershy's vines come towards and wrap around him, the guard fearfully shrieks, "Whoa!" He gets pulled out.
Outside: Catwalk
Fluttershy casually steps aside as she shoves the watchtower guard out of the tower and throws him away. The guard shouts as he flies back and stops, hitting the wall with a thud. Fluttershy walks inside the tower.
Inside: Watchtower
They all enter the tower. Everyone looks around and waits as Rainbow hops on the stool that the watchtower guard was previously sitting on. She immediately goes to work on the controls.
Pinkamena notices someone behind her and steps back. She looks at Applejack, shocked, clearly not expecting her here. Applejack notices Pinkamena's surprised stare and says loudly, "Spare me your foul gaze, woman."
Pinkamena looks between Sunset and Twilight as she points to Applejack, demanding, "Why is this one here?"
Twilight explains as she wraps her arm around Sunset, her hand on Sunset's upper left arm, both watching Rainbow do her thing, "We promised her she could stay by your side until she kills your boss. I always keep my promises,-" Sunset looks at Twilight weirdly, who looks at her with wide eyes as she continues quickly, "-when they're two muscle-bound whack-jobs who will kill me if I don't." She nods to Applejack, and Sunset nods understandably. Twilight says loudly to Rainbow, "Here you go." Twilight throws the prosthetic leg onto the panels in front of Rainbow.
Rainbow tells Twilight, "Oh, I was just kidding about the leg." She gestures to the battery and wristband that's attached together, "I just need these two things."
Twilight asks in disbelief, "What?"
Rainbow laughs a bit, "No, I... I thought it'd be funny." She looks at Twilight, "Was it funny? No, wait, what did he look like hopping around?"
Twilight shouts angrily, "I had to transfer him 30 thousand units!"
Sunset snaps her head at Twilight angrily, "What?!" Rainbow snickers to herself as she goes back to work.
Cafeteria
More security droids arrive, surrounding the tower. Security droid 12 fires at the side window on the right.
Inside: Watchtower
Twilight flinches and hugs Sunset closer to her as she covers Sunset from the sudden firing at the window to their right from security droid 12.
Applejack asks, "How are we gonna leave?"
Twilight refers to Rainbow as she answers Applejack, "Well, she's got a plan." She asks Rainbow angrily, "Right? Or is that another thing you made up?" Sunset comfortably hugs Twilight's waist, with Twilight's left arm around her shoulders and Twilight's other hand on her arm.
Rainbow quickly tells them, a bit frustrated no one believes her, as she tries to move quickly, "I have a plan! I have a plan!"
Applejack tells Rainbow as she looks up, "Cease your yammering and relieve us from this irksome confinement."
Twilight agrees with Applejack as she looks out the windows, "Yeah, I'll have to agree with the walking thesaurus on that one."
Applejack looks seriously at Twilight, "Do not ever call me a thesaurus."
Twilight defends herself, "It's just a metaphor, dude." Sunset lets go of Twilight's waist, but Twilight still keeps her left arm around Sunset.
Rainbow explains to Twilight and Sunset as she works quickly on the controls, "Her people are completely literal. Metaphors are gonna go over her head."
Applejack tells them in complete seriousness, "Nothing goes over my head. My reflexes are too fast. I would catch it."
Pinkamena is stunned by what she's hearing and mutters, "I'm gonna die surrounded by the biggest idiots in the galaxy."
Sunset hears Pinkamena and sighs. She looks at Pinkamena, "Honey,-" Pinkamena looks at her, "-I would disagree with you, but..." She shrugs her shoulders and tilts her head quickly, pressing her lips as she reluctantly agrees, "We are." Pinkamena glares at Sunset.
Outside: Hallway / Cafeteria
Many more prison guards run down the hallway to the cafeteria and surround the watchtower with a few more security droids, the security guards holding bigger weapons than before.
Inside: Watchtower
Twilight looks out the front window and sees the security guards on the ground floor, "Those are some big guns." Everyone else sees and gets worried.
Outside: Cafeteria
The security guards with the big guns kneel down and aim their weapons up at the watchtower.
The head riot guard shouts to the guards, "On my command! Number one!" One of the security guards shoots his weapon, which hits one of the watchtower glass windows.
Inside: Watchtower
The watchtower shakes as the blast hits the window which, cracks a bit from the impact.
Pinkamena says impatiently, "Rainbow, we are ready for your plan."
Rainbow tells Pinkamena, frustrated, "Hold on!" She rolls the stool to the right and throws the prosthetic leg to the floor.
Outside: Cafeteria
The head riot guard shouts his command, "Number two!" Another guard shoots his weapon, which hits the right side of the watchtower.
Inside: Watchtower
Twilight flinches as the blast hits the window to her right. The same security droid was shooting at a few minutes earlier. Twilight holds Sunset tighter to her, Sunset's right shoulder to Twilight's chest. Sunset rubs Twilight's hands, that's clasped on her arm. The window cracks upon impact.
Applejack looks at Rainbow's hair and smiles as she says, "You look like one of those colorful ponies. We'd roast them over a flame pit as children. Their flesh was quite delicious."
Rainbow turns her head to glare at Applejack and shouts, "Not helping!"
Outside: Cafeteria
The head riot guard shouts to the security guards, "Number three!" A guard shoots their weapon, which hits another glass window of the watchtower in front of Pinkamena, leaving a massive crack.
Inside: Watchtower
Pinkamena and Applejack flinch as the blast hits the window closest to them, and the massive crack spreads. Pinkamena steps closer and looks closer, seeing a couple of pieces of glass fall. Pinkamena mumbles, "Damn."
Outside: Cafeteria
The head riot guard shouts his commands, "All fire on my command!" The security guards don't move, as they are ready to fire.
Inside: Watchtower
Rainbow works as fast as she can to save them. With the battery beside her, she rips out a wire, and Fluttershy looks afraid and concerned.
The head riot guard's voice says, "Three!" Twilight and Sunset hug each other tightly as they take a step back. Sunset and Pinkamena share a look, and everyone looks worried, "Two!" Rainbow removes the wire from the controls and plugs it together with the battery wire, "One!" Rainbow looks up and smirks as she hears a power shutdown.
Outside: Cafeteria
Suddenly, everyone in the cafeteria floats. The security guards lose grip of their weapons and shields, the prisoners hold on to the wall of their cells as they float, and the head riot guard is stunned as he floats up in the air. Rainbow rigged to turn off the gravity in the area.