"What?" said Rarity.
Twilight sighed as she ran her hoof through her mane. "Princess Celestia thinks it's a great idea to teach young ponies about the consequences of breaking the law." she explained to the mare. "There will be guards!"
"So what? I am not going inside a filthy building with horrible ponies! It's insane!" Rarity yelled. "I can not be the only one who does not want to go!"
"Actually, everyone is fine with it." Twi assured.
"Really? Even Fluttershy?"
"Yes. Even Fluttershy."
...
"Okay. But if something bad happens, it's on you!" Rarity said.
Twilight was filming a prison documentary tomorrow. All of her friends were coming.
Should she leave Rarity here?
No, that would be mean. But she really didn't want to go.
Hopefully she'll take interest.
But for now, It worried her.
Inmates could not be trusted.
Twilight was going from minimum to maximum security prisons, so she thought that the more security, the worst inmates.
They just had to find out.

Author's Note

Yeah, short prologue, I know.